10721504 has 12 divisors (see below), whose sum is σ = 21108024. Its totient is φ = 5360736.

The previous prime is 10721489. The next prime is 10721549. The reversal of 10721504 is 40512701.

10721504 is nontrivially palindromic in base 15.

It is a super-2 number, since 2×10721504² = 229901296044032, 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 as a sum of consecutive naturals, namely, 167492 + ... + 167555.

It is an arithmetic number, because the mean of its divisors is an integer number (1759002).

Almost surely, 2^10721504 is an apocalyptic number.

It is an amenable number.

10721504 is a deficient number, since it is larger than the sum of its proper divisors (10386520).

10721504 is an equidigital number, since it uses as much as digits as its factorization.

10721504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335057 (or 335049 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 20.

The square root of 10721504 is about 3274.3707792490. The cubic root of 10721504 is about 220.5050655027.

The spelling of 10721504 in words is "ten million, seven hundred twenty-one thousand, five hundred four".