64928428 has 6 divisors (see below), whose sum is σ = 113624756. Its totient is φ = 32464212.

The previous prime is 64928417. The next prime is 64928459. The reversal of 64928428 is 82482946.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8116050 + ... + 8116057.

Almost surely, 2^64928428 is an apocalyptic number.

It is an amenable number.

64928428 is a deficient number, since it is larger than the sum of its proper divisors (48696328).

64928428 is a wasteful number, since it uses less digits than its factorization.

64928428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16232111 (or 16232109 counting only the distinct ones).

The product of its digits is 221184, while the sum is 43.

The square root of 64928428 is about 8057.8178187398. The cubic root of 64928428 is about 401.9249465917.

It can be divided in two parts, 64928 and 428, that added together give a palindrome (65356).

The spelling of 64928428 in words is "sixty-four million, nine hundred twenty-eight thousand, four hundred twenty-eight".