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164229280 = 2554721839
BaseRepresentation
bin10011100100111…
…11000010100000
3102110000201012221
421302133002200
5314020314110
624144000424
74032632365
oct1162370240
9373021187
10164229280
1184780986
1247000114
13280417b7
1417b5046c
15e6407da
hex9c9f0a0

164229280 has 48 divisors (see below), whose sum is σ = 396264960. Its totient is φ = 64291072.

The previous prime is 164229259. The next prime is 164229281. The reversal of 164229280 is 82922461.

It is not an unprimeable number, because it can be changed into a prime (164229281) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3400 + ... + 18439.

It is an arithmetic number, because the mean of its divisors is an integer number (8255520).

Almost surely, 2164229280 is an apocalyptic number.

164229280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164229280 is an abundant number, since it is smaller than the sum of its proper divisors (232035680).

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

164229280 is a wasteful number, since it uses less digits than its factorization.

164229280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21901 (or 21893 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 164229280 is about 12815.1972282911. The cubic root of 164229280 is about 547.6253321906.

The spelling of 164229280 in words is "one hundred sixty-four million, two hundred twenty-nine thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 47 80 94 160 188 235 376 470 752 940 1504 1880 3760 7520 21839 43678 87356 109195 174712 218390 349424 436780 698848 873560 1026433 1747120 2052866 3494240 4105732 5132165 8211464 10264330 16422928 20528660 32845856 41057320 82114640 164229280