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164230880 = 25511217499
BaseRepresentation
bin10011100100111…
…11011011100000
3102110000210102012
421302133123200
5314020342010
624144012052
74032640142
oct1162373340
9373023365
10164230880
1184782100
1247001028
1328042448
1417b50c92
15e641005
hex9c9f6e0

164230880 has 144 divisors (see below), whose sum is σ = 452466000. Its totient is φ = 56094720.

The previous prime is 164230877. The next prime is 164230883. The reversal of 164230880 is 88032461.

It is an interprime number because it is at equal distance from previous prime (164230877) and next prime (164230883).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164230883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 328871 + ... + 329369.

It is an arithmetic number, because the mean of its divisors is an integer number (3142125).

Almost surely, 2164230880 is an apocalyptic number.

164230880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 164230880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (226233000).

164230880 is an abundant number, since it is smaller than the sum of its proper divisors (288235120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

164230880 is a wasteful number, since it uses less digits than its factorization.

164230880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 553 (or 534 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 164230880 is about 12815.2596540218. The cubic root of 164230880 is about 547.6271105939.

The spelling of 164230880 in words is "one hundred sixty-four million, two hundred thirty thousand, eight hundred eighty".

Divisors: 1 2 4 5 8 10 11 16 17 20 22 32 34 40 44 55 68 80 85 88 110 121 136 160 170 176 187 220 242 272 340 352 374 440 484 499 544 605 680 748 880 935 968 998 1210 1360 1496 1760 1870 1936 1996 2057 2420 2495 2720 2992 3740 3872 3992 4114 4840 4990 5489 5984 7480 7984 8228 8483 9680 9980 10285 10978 14960 15968 16456 16966 19360 19960 20570 21956 27445 29920 32912 33932 39920 41140 42415 43912 54890 60379 65824 67864 79840 82280 84830 87824 93313 109780 120758 135728 164560 169660 175648 186626 219560 241516 271456 301895 329120 339320 373252 439120 466565 483032 603790 678640 746504 878240 933130 966064 1026443 1207580 1357280 1493008 1866260 1932128 2052886 2415160 2986016 3732520 4105772 4830320 5132215 7465040 8211544 9660640 10264430 14930080 16423088 20528860 32846176 41057720 82115440 164230880