165457400 has 48 divisors (see below), whose sum is σ = 401425200. Its totient is φ = 63303680.

The previous prime is 165457367. The next prime is 165457463. The reversal of 165457400 is 4754561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13385 + ... + 22584.

It is an arithmetic number, because the mean of its divisors is an integer number (8363025).

Almost surely, 2^165457400 is an apocalyptic number.

165457400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

165457400 is an abundant number, since it is smaller than the sum of its proper divisors (235967800).

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

165457400 is a wasteful number, since it uses less digits than its factorization.

165457400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36008 (or 35999 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 32.

The square root of 165457400 is about 12863.0245276918. The cubic root of 165457400 is about 548.9870059289.

The spelling of 165457400 in words is "one hundred sixty-five million, four hundred fifty-seven thousand, four hundred".