1056398372 has 24 divisors (see below), whose sum is σ = 1973944896. Its totient is φ = 493482528.

The previous prime is 1056398351. The next prime is 1056398381. The reversal of 1056398372 is 2738936501.

It is a super-2 number, since 2×1056398372² = 2231955040728500768, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129563 + ... + 137474.

It is an arithmetic number, because the mean of its divisors is an integer number (82247704).

Almost surely, 2^1056398372 is an apocalyptic number.

It is an amenable number.

1056398372 is a deficient number, since it is larger than the sum of its proper divisors (917546524).

1056398372 is a wasteful number, since it uses less digits than its factorization.

1056398372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267107 (or 267105 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 44.

The square root of 1056398372 is about 32502.2825659983. The cubic root of 1056398372 is about 1018.4567113777.

The spelling of 1056398372 in words is "one billion, fifty-six million, three hundred ninety-eight thousand, three hundred seventy-two".