164545400 has 24 divisors (see below), whose sum is σ = 382568520. Its totient is φ = 65818080.

The previous prime is 164545399. The next prime is 164545421. The reversal of 164545400 is 4545461.

It is a super-2 number, since 2×164545400² = 54150377322320000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 411164 + ... + 411563.

It is an arithmetic number, because the mean of its divisors is an integer number (15940355).

Almost surely, 2^164545400 is an apocalyptic number.

164545400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

164545400 is an abundant number, since it is smaller than the sum of its proper divisors (218023120).

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

164545400 is a wasteful number, since it uses less digits than its factorization.

164545400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822743 (or 822734 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 164545400 is about 12827.5250925500. The cubic root of 164545400 is about 547.9764761600.

The spelling of 164545400 in words is "one hundred sixty-four million, five hundred forty-five thousand, four hundred".