164044432 has 20 divisors (see below), whose sum is σ = 322192300. Its totient is φ = 80898048.

The previous prime is 164044427. The next prime is 164044457. The reversal of 164044432 is 234440461.

It can be written as a sum of positive squares in 2 ways, for example, as 75759616 + 88284816 = 8704^2 + 9396^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 164044432.

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, 69057 + ... + 71392.

It is an arithmetic number, because the mean of its divisors is an integer number (16109615).

Almost surely, 2^164044432 is an apocalyptic number.

It is an amenable number.

164044432 is a deficient number, since it is larger than the sum of its proper divisors (158147868).

164044432 is a wasteful number, since it uses less digits than its factorization.

164044432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140530 (or 140524 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 164044432 is about 12807.9831355292. The cubic root of 164044432 is about 547.4197954557.

Adding to 164044432 its reverse (234440461), we get a palindrome (398484893).

The spelling of 164044432 in words is "one hundred sixty-four million, forty-four thousand, four hundred thirty-two".