85140396 has 72 divisors (see below), whose sum is σ = 243507264. Its totient is φ = 25796880.

The previous prime is 85140371. The next prime is 85140397. The reversal of 85140396 is 69304158.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 85140396.

It is not an unprimeable number, because it can be changed into a prime (85140397) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6711 + ... + 14673.

Almost surely, 2^85140396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85140396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121753632).

85140396 is an abundant number, since it is smaller than the sum of its proper divisors (158366868).

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

85140396 is a wasteful number, since it uses less digits than its factorization.

85140396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7993 (or 7979 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 85140396 is about 9227.1553579638. The cubic root of 85140396 is about 439.9249114288.

The spelling of 85140396 in words is "eighty-five million, one hundred forty thousand, three hundred ninety-six".