85357290 has 32 divisors (see below), whose sum is σ = 205361856. Its totient is φ = 22705920.

The previous prime is 85357277. The next prime is 85357297. The reversal of 85357290 is 9275358.

It is a super-2 number, since 2×85357290² = 14571733912288200, which contains 22 as substring.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (85357297) 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, 9705 + ... + 16275.

It is an arithmetic number, because the mean of its divisors is an integer number (6417558).

Almost surely, 2^85357290 is an apocalyptic number.

85357290 is an abundant number, since it is smaller than the sum of its proper divisors (120004566).

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

85357290 is a wasteful number, since it uses less digits than its factorization.

85357290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7014.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 85357290 is about 9238.9009086579. The cubic root of 85357290 is about 440.2981622323.

The spelling of 85357290 in words is "eighty-five million, three hundred fifty-seven thousand, two hundred ninety".