164878128 has 60 divisors (see below), whose sum is σ = 462376408. Its totient is φ = 54846720.

The previous prime is 164878123. The next prime is 164878139. The reversal of 164878128 is 821878461.

It is not an unprimeable number, because it can be changed into a prime (164878123) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98676 + ... + 100332.

Almost surely, 2^164878128 is an apocalyptic number.

164878128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

164878128 is an abundant number, since it is smaller than the sum of its proper divisors (297498280).

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

164878128 is a wasteful number, since it uses less digits than its factorization.

164878128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2362 (or 2353 counting only the distinct ones).

The product of its digits is 172032, while the sum is 45.

The square root of 164878128 is about 12840.4878411998. The cubic root of 164878128 is about 548.3455827207.

The spelling of 164878128 in words is "one hundred sixty-four million, eight hundred seventy-eight thousand, one hundred twenty-eight".