85040780 has 24 divisors (see below), whose sum is σ = 194821200. Its totient is φ = 30923840.

The previous prime is 85040759. The next prime is 85040797. The reversal of 85040780 is 8704058.

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, 193055 + ... + 193494.

It is an arithmetic number, because the mean of its divisors is an integer number (8117550).

Almost surely, 2^85040780 is an apocalyptic number.

It is an amenable number.

85040780 is an abundant number, since it is smaller than the sum of its proper divisors (109780420).

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

85040780 is a wasteful number, since it uses less digits than its factorization.

85040780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386569 (or 386567 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 85040780 is about 9221.7557981113. The cubic root of 85040780 is about 439.7532707638.

The spelling of 85040780 in words is "eighty-five million, forty thousand, seven hundred eighty".