1056012720 has 120 divisors (see below), whose sum is σ = 3808153584. Its totient is φ = 241371648.

The previous prime is 1056012703. The next prime is 1056012751. The reversal of 1056012720 is 272106501.

It is a tau number, because it is divible by the number of its divisors (120).

It is a super-2 number, since 2×1056012720² = 2230325729603596800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33139 + ... + 56658.

Almost surely, 2^1056012720 is an apocalyptic number.

1056012720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1056012720 is an abundant number, since it is smaller than the sum of its proper divisors (2752140864).

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

1056012720 is a wasteful number, since it uses less digits than its factorization.

1056012720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89827 (or 89814 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 1056012720 is about 32496.3493334251. The cubic root of 1056012720 is about 1018.3327626594.

The spelling of 1056012720 in words is "one billion, fifty-six million, twelve thousand, seven hundred twenty".