64374728 has 16 divisors (see below), whose sum is σ = 131675760. Its totient is φ = 29261200.

The previous prime is 64374727. The next prime is 64374743. The reversal of 64374728 is 82747346.

It is not an unprimeable number, because it can be changed into a prime (64374721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 365678 + ... + 365853.

It is an arithmetic number, because the mean of its divisors is an integer number (8229735).

Almost surely, 2^64374728 is an apocalyptic number.

It is an amenable number.

64374728 is an abundant number, since it is smaller than the sum of its proper divisors (67301032).

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

64374728 is a wasteful number, since it uses less digits than its factorization.

64374728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 731548 (or 731544 counting only the distinct ones).

The product of its digits is 225792, while the sum is 41.

The square root of 64374728 is about 8023.3863175096. The cubic root of 64374728 is about 400.7791646042.

It can be divided in two parts, 6 and 4374728, that added together give a palindrome (4374734).

The spelling of 64374728 in words is "sixty-four million, three hundred seventy-four thousand, seven hundred twenty-eight".