857214580 has 24 divisors (see below), whose sum is σ = 1834117992. Its totient is φ = 336415872.

The previous prime is 857214563. The next prime is 857214581. The reversal of 857214580 is 85412758.

It can be written as a sum of positive squares in 4 ways, for example, as 18301284 + 838913296 = 4278^2 + 28964^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (857214581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403287 + ... + 405406.

It is an arithmetic number, because the mean of its divisors is an integer number (76421583).

Almost surely, 2^857214580 is an apocalyptic number.

It is an amenable number.

857214580 is an abundant number, since it is smaller than the sum of its proper divisors (976903412).

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

857214580 is a wasteful number, since it uses less digits than its factorization.

857214580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 808755 (or 808753 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 40.

The square root of 857214580 is about 29278.2270638097. The cubic root of 857214580 is about 949.9407460734.

The spelling of 857214580 in words is "eight hundred fifty-seven million, two hundred fourteen thousand, five hundred eighty".