164872028 has 12 divisors (see below), whose sum is σ = 288795360. Its totient is φ = 82359072.

The previous prime is 164872021. The next prime is 164872031. The reversal of 164872028 is 820278461.

It is a junction number, because it is equal to n+sod(n) for n = 164871982 and 164872000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164872021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14273 + ... + 23096.

It is an arithmetic number, because the mean of its divisors is an integer number (24066280).

Almost surely, 2^164872028 is an apocalyptic number.

It is an amenable number.

164872028 is a deficient number, since it is larger than the sum of its proper divisors (123923332).

164872028 is a wasteful number, since it uses less digits than its factorization.

164872028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38476 (or 38474 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 164872028 is about 12840.2503090867. The cubic root of 164872028 is about 548.3388202525.

The spelling of 164872028 in words is "one hundred sixty-four million, eight hundred seventy-two thousand, twenty-eight".