10721392 has 20 divisors (see below), whose sum is σ = 22661496. Its totient is φ = 4873280.

The previous prime is 10721383. The next prime is 10721393. The reversal of 10721392 is 29312701.

It is a super-2 number, since 2×10721392² = 229896492835328, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10721393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30283 + ... + 30634.

Almost surely, 2^10721392 is an apocalyptic number.

It is an amenable number.

10721392 is an abundant number, since it is smaller than the sum of its proper divisors (11940104).

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

10721392 is a wasteful number, since it uses less digits than its factorization.

10721392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60936 (or 60930 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 10721392 is about 3274.3536766819. The cubic root of 10721392 is about 220.5042976797.

The spelling of 10721392 in words is "ten million, seven hundred twenty-one thousand, three hundred ninety-two".