85797420 has 48 divisors (see below), whose sum is σ = 246099168. Its totient is φ = 22320640.

The previous prime is 85797409. The next prime is 85797421. The reversal of 85797420 is 2479758.

It is a super-2 number, since 2×85797420² = 14722394557312800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85797421) 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, 14979 + ... + 19898.

It is an arithmetic number, because the mean of its divisors is an integer number (5127066).

Almost surely, 2^85797420 is an apocalyptic number.

It is an amenable number.

85797420 is an abundant number, since it is smaller than the sum of its proper divisors (160301748).

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

85797420 is a wasteful number, since it uses less digits than its factorization.

85797420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34930 (or 34928 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 42.

The square root of 85797420 is about 9262.6896741713. The cubic root of 85797420 is about 441.0536388189.

The spelling of 85797420 in words is "eighty-five million, seven hundred ninety-seven thousand, four hundred twenty".