164388624 has 20 divisors (see below), whose sum is σ = 424670736. Its totient is φ = 54796192.

The previous prime is 164388611. The next prime is 164388649. The reversal of 164388624 is 426883461.

164388624 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×164388624² = 54047239401226752, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

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, 1712334 + ... + 1712429.

Almost surely, 2^164388624 is an apocalyptic number.

It is an amenable number.

164388624 is an abundant number, since it is smaller than the sum of its proper divisors (260282112).

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

164388624 is a wasteful number, since it uses less digits than its factorization.

164388624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3424774 (or 3424768 counting only the distinct ones).

The product of its digits is 221184, while the sum is 42.

The square root of 164388624 is about 12821.4127146738. The cubic root of 164388624 is about 547.8023867013.

The spelling of 164388624 in words is "one hundred sixty-four million, three hundred eighty-eight thousand, six hundred twenty-four".