165212928 has 54 divisors (see below), whose sum is σ = 476356244. Its totient is φ = 55070208.

The previous prime is 165212909. The next prime is 165212939. The reversal of 165212928 is 829212561.

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 = 165212892 and 165212901.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33550 + ... + 38157.

Almost surely, 2^165212928 is an apocalyptic number.

165212928 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

165212928 is an abundant number, since it is smaller than the sum of its proper divisors (311143316).

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

165212928 is an equidigital number, since it uses as much as digits as its factorization.

165212928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71729 (or 71712 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 165212928 is about 12853.5181176206. The cubic root of 165212928 is about 548.7164869366.

The spelling of 165212928 in words is "one hundred sixty-five million, two hundred twelve thousand, nine hundred twenty-eight".