1057807320 has 64 divisors (see below), whose sum is σ = 3360100320. Its totient is φ = 265488384.

The previous prime is 1057807313. The next prime is 1057807321. The reversal of 1057807320 is 237087501.

It is a super-2 number, since 2×1057807320² = 2237912652491164800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057807321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 257227 + ... + 261306.

Almost surely, 2^1057807320 is an apocalyptic number.

1057807320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1057807320 is an abundant number, since it is smaller than the sum of its proper divisors (2302293000).

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

1057807320 is a wasteful number, since it uses less digits than its factorization.

1057807320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 518564 (or 518560 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 33.

The square root of 1057807320 is about 32523.9499446177. The cubic root of 1057807320 is about 1018.9092916136.

The spelling of 1057807320 in words is "one billion, fifty-seven million, eight hundred seven thousand, three hundred twenty".