34172920 has 16 divisors (see below), whose sum is σ = 76889160. Its totient is φ = 13669152.

The previous prime is 34172909. The next prime is 34172947. The reversal of 34172920 is 2927143.

It is a super-2 number, since 2×34172920² = 2335576922652800, 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 3 ways as a sum of consecutive naturals, for example, 427122 + ... + 427201.

Almost surely, 2^34172920 is an apocalyptic number.

It is an amenable number.

34172920 is an abundant number, since it is smaller than the sum of its proper divisors (42716240).

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

34172920 is a wasteful number, since it uses less digits than its factorization.

34172920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854334 (or 854330 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 34172920 is about 5845.7608572366. The cubic root of 34172920 is about 324.5094611610.

The spelling of 34172920 in words is "thirty-four million, one hundred seventy-two thousand, nine hundred twenty".