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163689330 = 23573072539
BaseRepresentation
bin10011100000110…
…11001101110010
3102102000021112210
421300123031302
5313401024310
624124232550
74025223240
oct1160331562
9372007483
10163689330
1184442242
124699b756
1327bb2abc
1417a4d790
15e585820
hex9c1b372

163689330 has 64 divisors (see below), whose sum is σ = 450616320. Its totient is φ = 37278144.

The previous prime is 163689307. The next prime is 163689371. The reversal of 163689330 is 33986361.

163689330 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 63201 + ... + 65739.

It is an arithmetic number, because the mean of its divisors is an integer number (7040880).

Almost surely, 2163689330 is an apocalyptic number.

163689330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 163689330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225308160).

163689330 is an abundant number, since it is smaller than the sum of its proper divisors (286926990).

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

163689330 is a wasteful number, since it uses less digits than its factorization.

163689330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863.

The product of its (nonzero) digits is 69984, while the sum is 39.

The square root of 163689330 is about 12794.1130993907. The cubic root of 163689330 is about 547.0245157662.

The spelling of 163689330 in words is "one hundred sixty-three million, six hundred eighty-nine thousand, three hundred thirty".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 307 614 921 1535 1842 2149 2539 3070 4298 4605 5078 6447 7617 9210 10745 12695 12894 15234 17773 21490 25390 32235 35546 38085 53319 64470 76170 88865 106638 177730 266595 533190 779473 1558946 2338419 3897365 4676838 5456311 7794730 10912622 11692095 16368933 23384190 27281555 32737866 54563110 81844665 163689330