85744280 has 32 divisors (see below), whose sum is σ = 193190400. Its totient is φ = 34250496.

The previous prime is 85744273. The next prime is 85744289. The reversal of 85744280 is 8244758.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85744289) 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, 50729 + ... + 52391.

It is an arithmetic number, because the mean of its divisors is an integer number (6037200).

Almost surely, 2^85744280 is an apocalyptic number.

It is an amenable number.

85744280 is an abundant number, since it is smaller than the sum of its proper divisors (107446120).

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

85744280 is a wasteful number, since it uses less digits than its factorization.

85744280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2963 (or 2959 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 85744280 is about 9259.8207326060. The cubic root of 85744280 is about 440.9625621453.

The spelling of 85744280 in words is "eighty-five million, seven hundred forty-four thousand, two hundred eighty".