164770128 has 60 divisors (see below), whose sum is σ = 485405440. Its totient is φ = 52031808.

The previous prime is 164770127. The next prime is 164770129. The reversal of 164770128 is 821077461.

164770128 is a `hidden beast` number, since 1 + 647 + 7 + 0 + 1 + 2 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (164770127) and next prime (164770129).

It is a super-2 number, since 2×164770128² = 54298390162272768, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 164770092 and 164770101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164770121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27376 + ... + 32847.

Almost surely, 2^164770128 is an apocalyptic number.

164770128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

164770128 is an abundant number, since it is smaller than the sum of its proper divisors (320635312).

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

164770128 is a wasteful number, since it uses less digits than its factorization.

164770128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60256 (or 60247 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 36.

The square root of 164770128 is about 12836.2817046059. The cubic root of 164770128 is about 548.2258291004.

The spelling of 164770128 in words is "one hundred sixty-four million, seven hundred seventy thousand, one hundred twenty-eight".