85213992 has 32 divisors (see below), whose sum is σ = 213461280. Its totient is φ = 28347840.

The previous prime is 85213969. The next prime is 85214021. The reversal of 85213992 is 29931258.

It is a super-2 number, since 2×85213992² = 14522848865152128, 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.

It is a self number, because there is not a number n which added to its sum of digits gives 85213992.

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, 9703 + ... + 16265.

It is an arithmetic number, because the mean of its divisors is an integer number (6670665).

Almost surely, 2^85213992 is an apocalyptic number.

It is an amenable number.

85213992 is an abundant number, since it is smaller than the sum of its proper divisors (128247288).

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

85213992 is a wasteful number, since it uses less digits than its factorization.

85213992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7113 (or 7109 counting only the distinct ones).

The product of its digits is 38880, while the sum is 39.

The square root of 85213992 is about 9231.1425078373. The cubic root of 85213992 is about 440.0516330592.

The spelling of 85213992 in words is "eighty-five million, two hundred thirteen thousand, nine hundred ninety-two".