64402628 has 24 divisors (see below), whose sum is σ = 119011200. Its totient is φ = 30410208.

The previous prime is 64402621. The next prime is 64402631. The reversal of 64402628 is 82620446.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 64402594 and 64402603.

It is not an unprimeable number, because it can be changed into a prime (64402621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26738 + ... + 29046.

It is an arithmetic number, because the mean of its divisors is an integer number (4958800).

Almost surely, 2^64402628 is an apocalyptic number.

It is an amenable number.

64402628 is a deficient number, since it is larger than the sum of its proper divisors (54608572).

64402628 is a wasteful number, since it uses less digits than its factorization.

64402628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2699 (or 2697 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 64402628 is about 8025.1247965374. The cubic root of 64402628 is about 400.8370554569.

The spelling of 64402628 in words is "sixty-four million, four hundred two thousand, six hundred twenty-eight".