857580930 has 48 divisors (see below), whose sum is σ = 2267516160. Its totient is φ = 224810784.

The previous prime is 857580851. The next prime is 857580937. The reversal of 857580930 is 39085758.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (857580937) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75442 + ... + 86061.

It is an arithmetic number, because the mean of its divisors is an integer number (47239920).

Almost surely, 2^857580930 is an apocalyptic number.

857580930 is an abundant number, since it is smaller than the sum of its proper divisors (1409935230).

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

857580930 is a wasteful number, since it uses less digits than its factorization.

857580930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161575 (or 161572 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 45.

The square root of 857580930 is about 29284.4827511090. The cubic root of 857580930 is about 950.0760530065.

The spelling of 857580930 in words is "eight hundred fifty-seven million, five hundred eighty thousand, nine hundred thirty".