85857380 has 24 divisors (see below), whose sum is σ = 206058048. Its totient is φ = 29436768.

The previous prime is 85857379. The next prime is 85857419. The reversal of 85857380 is 8375858.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 306494 + ... + 306773.

It is an arithmetic number, because the mean of its divisors is an integer number (8585752).

Almost surely, 2^85857380 is an apocalyptic number.

It is an amenable number.

85857380 is an abundant number, since it is smaller than the sum of its proper divisors (120200668).

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

85857380 is a wasteful number, since it uses less digits than its factorization.

85857380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613283 (or 613281 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 44.

The square root of 85857380 is about 9265.9257497565. The cubic root of 85857380 is about 441.1563591494.

The spelling of 85857380 in words is "eighty-five million, eight hundred fifty-seven thousand, three hundred eighty".