1057857400 has 192 divisors, whose sum is σ = 2699827200. Its totient is φ = 384384000.

The previous prime is 1057857397. The next prime is 1057857407. The reversal of 1057857400 is 47587501.

It is a super-2 number, since 2×1057857400² = 2238124557469520000, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1057857400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1057857407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13390561 + ... + 13390639.

It is an arithmetic number, because the mean of its divisors is an integer number (14061600).

Almost surely, 2^1057857400 is an apocalyptic number.

1057857400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1057857400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1349913600).

1057857400 is an abundant number, since it is smaller than the sum of its proper divisors (1641969800).

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

1057857400 is a wasteful number, since it uses less digits than its factorization.

1057857400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230 (or 221 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 37.

The square root of 1057857400 is about 32524.7198296926. The cubic root of 1057857400 is about 1018.9253708407.

The spelling of 1057857400 in words is "one billion, fifty-seven million, eight hundred fifty-seven thousand, four hundred".