64273272 has 32 divisors (see below), whose sum is σ = 183638400. Its totient is φ = 18363744.

The previous prime is 64273229. The next prime is 64273289. The reversal of 64273272 is 27237246.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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, 191122 + ... + 191457.

It is an arithmetic number, because the mean of its divisors is an integer number (5738700).

Almost surely, 2^64273272 is an apocalyptic number.

It is an amenable number.

64273272 is an abundant number, since it is smaller than the sum of its proper divisors (119365128).

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

64273272 is a wasteful number, since it uses less digits than its factorization.

64273272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382595 (or 382591 counting only the distinct ones).

The product of its digits is 28224, while the sum is 33.

The square root of 64273272 is about 8017.0613069877. The cubic root of 64273272 is about 400.5685082797.

The spelling of 64273272 in words is "sixty-four million, two hundred seventy-three thousand, two hundred seventy-two".