34972720 has 20 divisors (see below), whose sum is σ = 81311760. Its totient is φ = 13989056.

The previous prime is 34972687. The next prime is 34972771. The reversal of 34972720 is 2727943.

It is a tau number, because it is divible by the number of its divisors (20).

It is a super-2 number, since 2×34972720² = 2446182288396800, 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, 218500 + ... + 218659.

It is an arithmetic number, because the mean of its divisors is an integer number (4065588).

Almost surely, 2^34972720 is an apocalyptic number.

It is an amenable number.

34972720 is an abundant number, since it is smaller than the sum of its proper divisors (46339040).

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

34972720 is a wasteful number, since it uses less digits than its factorization.

34972720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437172 (or 437166 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 34972720 is about 5913.7737528587. The cubic root of 34972720 is about 327.0216235112.

The spelling of 34972720 in words is "thirty-four million, nine hundred seventy-two thousand, seven hundred twenty".