64130028 has 48 divisors (see below), whose sum is σ = 157301760. Its totient is φ = 20309184.

The previous prime is 64130021. The next prime is 64130029. The reversal of 64130028 is 82003146.

It is a happy number.

It is a super-2 number, since 2×64130028² = 8225320982561568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64130021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17413 + ... + 20771.

It is an arithmetic number, because the mean of its divisors is an integer number (3277120).

Almost surely, 2^64130028 is an apocalyptic number.

It is an amenable number.

64130028 is an abundant number, since it is smaller than the sum of its proper divisors (93171732).

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

64130028 is a wasteful number, since it uses less digits than its factorization.

64130028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3446 (or 3444 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 64130028 is about 8008.1226264337. The cubic root of 64130028 is about 400.2707084177.

The spelling of 64130028 in words is "sixty-four million, one hundred thirty thousand, twenty-eight".