64500428 has 6 divisors (see below), whose sum is σ = 112875756. Its totient is φ = 32250212.

The previous prime is 64500409. The next prime is 64500463. The reversal of 64500428 is 82400546.

64500428 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 64500428.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8062550 + ... + 8062557.

It is an arithmetic number, because the mean of its divisors is an integer number (18812626).

Almost surely, 2^64500428 is an apocalyptic number.

It is an amenable number.

64500428 is a deficient number, since it is larger than the sum of its proper divisors (48375328).

64500428 is a wasteful number, since it uses less digits than its factorization.

64500428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16125111 (or 16125109 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 64500428 is about 8031.2158481764. The cubic root of 64500428 is about 401.0398527565.

The spelling of 64500428 in words is "sixty-four million, five hundred thousand, four hundred twenty-eight".