64280272 has 40 divisors (see below), whose sum is σ = 143393600. Its totient is φ = 27343872.

The previous prime is 64280261. The next prime is 64280291. The reversal of 64280272 is 27208246.

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, 13504 + ... + 17632.

It is an arithmetic number, because the mean of its divisors is an integer number (3584840).

Almost surely, 2^64280272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64280272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71696800).

64280272 is an abundant number, since it is smaller than the sum of its proper divisors (79113328).

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

64280272 is a wasteful number, since it uses less digits than its factorization.

64280272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4283 (or 4277 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 31.

The square root of 64280272 is about 8017.4978640471. The cubic root of 64280272 is about 400.5830497196.

The spelling of 64280272 in words is "sixty-four million, two hundred eighty thousand, two hundred seventy-two".