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164729870 = 2516472987
BaseRepresentation
bin10011101000110…
…01010000001110
3102110222010220022
421310121100032
5314132323440
624202422142
74040116004
oct1164312016
9373863808
10164729870
1184a92a98
1247201952
13281885c6
1417c40a74
15e6ddcb5
hex9d1940e

164729870 has 8 divisors (see below), whose sum is σ = 296513784. Its totient is φ = 65891944.

The previous prime is 164729863. The next prime is 164729891. The reversal of 164729870 is 78927461.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8236484 + ... + 8236503.

It is an arithmetic number, because the mean of its divisors is an integer number (37064223).

Almost surely, 2164729870 is an apocalyptic number.

164729870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

164729870 is a deficient number, since it is larger than the sum of its proper divisors (131783914).

164729870 is a wasteful number, since it uses less digits than its factorization.

164729870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16472994.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 164729870 is about 12834.7134755709. The cubic root of 164729870 is about 548.1811764411.

The spelling of 164729870 in words is "one hundred sixty-four million, seven hundred twenty-nine thousand, eight hundred seventy".

Divisors: 1 2 5 10 16472987 32945974 82364935 164729870