165456120 has 32 divisors (see below), whose sum is σ = 496368720. Its totient is φ = 44121600.

The previous prime is 165456103. The next prime is 165456139. The reversal of 165456120 is 21654561.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 689281 + ... + 689520.

Almost surely, 2^165456120 is an apocalyptic number.

165456120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165456120 is an abundant number, since it is smaller than the sum of its proper divisors (330912600).

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

165456120 is a wasteful number, since it uses less digits than its factorization.

165456120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378815 (or 1378811 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 30.

The square root of 165456120 is about 12862.9747725789. The cubic root of 165456120 is about 548.9855902469.

The spelling of 165456120 in words is "one hundred sixty-five million, four hundred fifty-six thousand, one hundred twenty".