64028420 has 12 divisors (see below), whose sum is σ = 134459724. Its totient is φ = 25611360.

The previous prime is 64028417. The next prime is 64028501. The reversal of 64028420 is 2482046.

It can be written as a sum of positive squares in 2 ways, for example, as 50353216 + 13675204 = 7096^2 + 3698^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 64028420.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1600691 + ... + 1600730.

It is an arithmetic number, because the mean of its divisors is an integer number (11204977).

Almost surely, 2^64028420 is an apocalyptic number.

It is an amenable number.

64028420 is an abundant number, since it is smaller than the sum of its proper divisors (70431304).

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

64028420 is a wasteful number, since it uses less digits than its factorization.

64028420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3201430 (or 3201428 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 64028420 is about 8001.7760528523. The cubic root of 64028420 is about 400.0591995714.

The spelling of 64028420 in words is "sixty-four million, twenty-eight thousand, four hundred twenty".