857929540 has 48 divisors (see below), whose sum is σ = 1981550592. Its totient is φ = 310029696.

The previous prime is 857929529. The next prime is 857929547. The reversal of 857929540 is 45929758.

857929540 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×857929540² = 1472086191209223200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (857929547) 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, 22884 + ... + 47323.

It is an arithmetic number, because the mean of its divisors is an integer number (41282304).

Almost surely, 2^857929540 is an apocalyptic number.

It is an amenable number.

857929540 is an abundant number, since it is smaller than the sum of its proper divisors (1123621052).

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

857929540 is a wasteful number, since it uses less digits than its factorization.

857929540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70276 (or 70274 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 49.

The square root of 857929540 is about 29290.4342746911. The cubic root of 857929540 is about 950.2047721094.

The spelling of 857929540 in words is "eight hundred fifty-seven million, nine hundred twenty-nine thousand, five hundred forty".