857235460 has 24 divisors (see below), whose sum is σ = 1806612696. Its totient is φ = 341671680.

The previous prime is 857235439. The next prime is 857235473. The reversal of 857235460 is 64532758.

It can be written as a sum of positive squares in 4 ways, for example, as 226622916 + 630612544 = 15054^2 + 25112^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 70647 + ... + 81886.

It is an arithmetic number, because the mean of its divisors is an integer number (75275529).

Almost surely, 2^857235460 is an apocalyptic number.

It is an amenable number.

857235460 is an abundant number, since it is smaller than the sum of its proper divisors (949377236).

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

857235460 is a wasteful number, since it uses less digits than its factorization.

857235460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152823 (or 152821 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 40.

The square root of 857235460 is about 29278.5836406067. The cubic root of 857235460 is about 949.9484588843.

The spelling of 857235460 in words is "eight hundred fifty-seven million, two hundred thirty-five thousand, four hundred sixty".