172804416 has 56 divisors (see below), whose sum is σ = 471976704. Its totient is φ = 55741440.

The previous prime is 172804397. The next prime is 172804421. The reversal of 172804416 is 614408271.

It is a super-2 number, since 2×172804416² = 59722732378202112, 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 7 ways as a sum of consecutive naturals, for example, 8565 + ... + 20468.

Almost surely, 2^172804416 is an apocalyptic number.

172804416 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

172804416 is an abundant number, since it is smaller than the sum of its proper divisors (299172288).

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

172804416 is a wasteful number, since it uses less digits than its factorization.

172804416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29079 (or 29069 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 172804416 is about 13145.5093473018. The cubic root of 172804416 is about 556.9954047284.

The spelling of 172804416 in words is "one hundred seventy-two million, eight hundred four thousand, four hundred sixteen".