85279720 has 32 divisors (see below), whose sum is σ = 198498600. Its totient is φ = 32935168.

The previous prime is 85279673. The next prime is 85279739. The reversal of 85279720 is 2797258.

It can be written as a sum of positive squares in 4 ways, for example, as 82410084 + 2869636 = 9078^2 + 1694^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 35599 + ... + 37918.

Almost surely, 2^85279720 is an apocalyptic number.

It is an amenable number.

85279720 is an abundant number, since it is smaller than the sum of its proper divisors (113218880).

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

85279720 is a wasteful number, since it uses less digits than its factorization.

85279720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73557 (or 73553 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 40.

The square root of 85279720 is about 9234.7019442968. The cubic root of 85279720 is about 440.1647454706.

The spelling of 85279720 in words is "eighty-five million, two hundred seventy-nine thousand, seven hundred twenty".