165028500 has 432 divisors, whose sum is σ = 665054208. Its totient is φ = 33696000.

The previous prime is 165028483. The next prime is 165028529. The reversal of 165028500 is 5820561.

165028500 is a `hidden beast` number, since 1 + 650 + 2 + 8 + 5 + 0 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 5323485 + ... + 5323515.

Almost surely, 2^165028500 is an apocalyptic number.

165028500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 165028500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (332527104).

165028500 is an abundant number, since it is smaller than the sum of its proper divisors (500025708).

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

165028500 is a wasteful number, since it uses less digits than its factorization.

165028500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 165028500 is about 12846.3418917605. The cubic root of 165028500 is about 548.5122326145.

The spelling of 165028500 in words is "one hundred sixty-five million, twenty-eight thousand, five hundred".