34209920 has 32 divisors (see below), whose sum is σ = 81784620. Its totient is φ = 13683712.

The previous prime is 34209919. The next prime is 34209971. The reversal of 34209920 is 2990243.

It can be written as a sum of positive squares in 2 ways, for example, as 34199104 + 10816 = 5848^2 + 104^2 .

It is a tau number, because it is divible by the number of its divisors (32).

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, 26087 + ... + 27366.

Almost surely, 2^34209920 is an apocalyptic number.

It is an amenable number.

34209920 is an abundant number, since it is smaller than the sum of its proper divisors (47574700).

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

34209920 is an equidigital number, since it uses as much as digits as its factorization.

34209920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53472 (or 53460 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 34209920 is about 5848.9246874960. The cubic root of 34209920 is about 324.6265374823.

The spelling of 34209920 in words is "thirty-four million, two hundred nine thousand, nine hundred twenty".