85784272 has 20 divisors (see below), whose sum is σ = 189951136. Its totient is φ = 36764640.

The previous prime is 85784243. The next prime is 85784327. The reversal of 85784272 is 27248758.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382854 + ... + 383077.

Almost surely, 2^85784272 is an apocalyptic number.

It is an amenable number.

85784272 is an abundant number, since it is smaller than the sum of its proper divisors (104166864).

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

85784272 is a wasteful number, since it uses less digits than its factorization.

85784272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765946 (or 765940 counting only the distinct ones).

The product of its digits is 250880, while the sum is 43.

The square root of 85784272 is about 9261.9799179225. The cubic root of 85784272 is about 441.0311079569.

The spelling of 85784272 in words is "eighty-five million, seven hundred eighty-four thousand, two hundred seventy-two".