64020628 has 24 divisors (see below), whose sum is σ = 128369024. Its totient is φ = 27367200.

The previous prime is 64020599. The next prime is 64020631. The reversal of 64020628 is 82602046.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 64020596 and 64020605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9073 + ... + 14503.

Almost surely, 2^64020628 is an apocalyptic number.

It is an amenable number.

64020628 is an abundant number, since it is smaller than the sum of its proper divisors (64348396).

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

64020628 is a wasteful number, since it uses less digits than its factorization.

64020628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5863 (or 5861 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 28.

The square root of 64020628 is about 8001.2891461314. The cubic root of 64020628 is about 400.0429703837.

The spelling of 64020628 in words is "sixty-four million, twenty thousand, six hundred twenty-eight".