85078920 has 32 divisors (see below), whose sum is σ = 255237120. Its totient is φ = 22687680.

The previous prime is 85078907. The next prime is 85078921. The reversal of 85078920 is 2987058.

It is not an unprimeable number, because it can be changed into a prime (85078921) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354376 + ... + 354615.

It is an arithmetic number, because the mean of its divisors is an integer number (7976160).

Almost surely, 2^85078920 is an apocalyptic number.

It is an amenable number.

85078920 is an abundant number, since it is smaller than the sum of its proper divisors (170158200).

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

85078920 is a wasteful number, since it uses less digits than its factorization.

85078920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 709005 (or 709001 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 85078920 is about 9223.8235022143. The cubic root of 85078920 is about 439.8190026906.

The spelling of 85078920 in words is "eighty-five million, seventy-eight thousand, nine hundred twenty".