85787272 has 8 divisors (see below), whose sum is σ = 160851150. Its totient is φ = 42893632.

The previous prime is 85787257. The next prime is 85787281. The reversal of 85787272 is 27278758.

It can be written as a sum of positive squares in only one way, i.e., 75585636 + 10201636 = 8694^2 + 3194^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5361697 + ... + 5361712.

Almost surely, 2^85787272 is an apocalyptic number.

It is an amenable number.

85787272 is a deficient number, since it is larger than the sum of its proper divisors (75063878).

85787272 is a wasteful number, since it uses less digits than its factorization.

85787272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10723415 (or 10723411 counting only the distinct ones).

The product of its digits is 439040, while the sum is 46.

The square root of 85787272 is about 9262.1418689200. The cubic root of 85787272 is about 441.0362490621.

The spelling of 85787272 in words is "eighty-five million, seven hundred eighty-seven thousand, two hundred seventy-two".