64094728 has 8 divisors (see below), whose sum is σ = 120177630. Its totient is φ = 32047360.

The previous prime is 64094711. The next prime is 64094729. The reversal of 64094728 is 82749046.

It can be written as a sum of positive squares in only one way, i.e., 38713284 + 25381444 = 6222^2 + 5038^2 .

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

It is not an unprimeable number, because it can be changed into a prime (64094729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4005913 + ... + 4005928.

Almost surely, 2^64094728 is an apocalyptic number.

It is an amenable number.

64094728 is a deficient number, since it is larger than the sum of its proper divisors (56082902).

64094728 is a wasteful number, since it uses less digits than its factorization.

64094728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8011847 (or 8011843 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 64094728 is about 8005.9183108498. The cubic root of 64094728 is about 400.1972527124.

The spelling of 64094728 in words is "sixty-four million, ninety-four thousand, seven hundred twenty-eight".