165628424 has 16 divisors (see below), whose sum is σ = 334442220. Its totient is φ = 76443840.

The previous prime is 165628417. The next prime is 165628457. The reversal of 165628424 is 424826561.

It can be written as a sum of positive squares in 2 ways, for example, as 161747524 + 3880900 = 12718^2 + 1970^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 796187 + ... + 796394.

Almost surely, 2^165628424 is an apocalyptic number.

It is an amenable number.

165628424 is an abundant number, since it is smaller than the sum of its proper divisors (168813796).

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

165628424 is a wasteful number, since it uses less digits than its factorization.

165628424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1592600 (or 1592596 counting only the distinct ones).

The product of its digits is 92160, while the sum is 38.

The square root of 165628424 is about 12869.6707028579. The cubic root of 165628424 is about 549.1760931152.

The spelling of 165628424 in words is "one hundred sixty-five million, six hundred twenty-eight thousand, four hundred twenty-four".