64237328 has 40 divisors (see below), whose sum is σ = 134574720. Its totient is φ = 29600640.

The previous prime is 64237307. The next prime is 64237333. The reversal of 64237328 is 82373246.

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, 8393 + ... + 14103.

It is an arithmetic number, because the mean of its divisors is an integer number (3364368).

Almost surely, 2^64237328 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 64237328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67287360).

64237328 is an abundant number, since it is smaller than the sum of its proper divisors (70337392).

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

64237328 is a wasteful number, since it uses less digits than its factorization.

64237328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5775 (or 5769 counting only the distinct ones).

The product of its digits is 48384, while the sum is 35.

The square root of 64237328 is about 8014.8192743193. The cubic root of 64237328 is about 400.4938234285.

The spelling of 64237328 in words is "sixty-four million, two hundred thirty-seven thousand, three hundred twenty-eight".