1056287780 has 12 divisors (see below), whose sum is σ = 2218204380. Its totient is φ = 422515104.

The previous prime is 1056287777. The next prime is 1056287801. The reversal of 1056287780 is 877826501.

It can be written as a sum of positive squares in 2 ways, for example, as 125305636 + 930982144 = 11194^2 + 30512^2 .

It is a super-2 number, since 2×1056287780² = 2231487748354656800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26407175 + ... + 26407214.

It is an arithmetic number, because the mean of its divisors is an integer number (184850365).

Almost surely, 2^1056287780 is an apocalyptic number.

1056287780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1056287780 is an abundant number, since it is smaller than the sum of its proper divisors (1161916600).

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

1056287780 is a wasteful number, since it uses less digits than its factorization.

1056287780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52814398 (or 52814396 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 44.

The square root of 1056287780 is about 32500.5812255720. The cubic root of 1056287780 is about 1018.4211701468.

The spelling of 1056287780 in words is "one billion, fifty-six million, two hundred eighty-seven thousand, seven hundred eighty".