20764628 has 12 divisors (see below), whose sum is σ = 36385440. Its totient is φ = 10368792.

The previous prime is 20764619. The next prime is 20764651. The reversal of 20764628 is 82646702.

It is a congruent number.

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, 593 + ... + 6471.

It is an arithmetic number, because the mean of its divisors is an integer number (3032120).

Almost surely, 2^20764628 is an apocalyptic number.

It is an amenable number.

20764628 is a deficient number, since it is larger than the sum of its proper divisors (15620812).

20764628 is a wasteful number, since it uses less digits than its factorization.

20764628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6766 (or 6764 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 20764628 is about 4556.8221382889. The cubic root of 20764628 is about 274.8577909358.

The spelling of 20764628 in words is "twenty million, seven hundred sixty-four thousand, six hundred twenty-eight".