64190928 has 40 divisors (see below), whose sum is σ = 166208608. Its totient is φ = 21347712.

The previous prime is 64190923. The next prime is 64190933. The reversal of 64190928 is 82909146.

It is an interprime number because it is at equal distance from previous prime (64190923) and next prime (64190933).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64190923) 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, 23826 + ... + 26382.

Almost surely, 2^64190928 is an apocalyptic number.

It is an amenable number.

64190928 is an abundant number, since it is smaller than the sum of its proper divisors (102017680).

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

64190928 is a wasteful number, since it uses less digits than its factorization.

64190928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3091 (or 3085 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 64190928 is about 8011.9241134699. The cubic root of 64190928 is about 400.3973717751.

The spelling of 64190928 in words is "sixty-four million, one hundred ninety thousand, nine hundred twenty-eight".