20620768 has 36 divisors (see below), whose sum is σ = 47228832. Its totient is φ = 8836800.

The previous prime is 20620751. The next prime is 20620771. The reversal of 20620768 is 86702602.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5008 + ... + 8143.

It is an arithmetic number, because the mean of its divisors is an integer number (1311912).

Almost surely, 2^20620768 is an apocalyptic number.

20620768 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20620768 is an abundant number, since it is smaller than the sum of its proper divisors (26608064).

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

20620768 is a wasteful number, since it uses less digits than its factorization.

20620768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13175 (or 13160 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 20620768 is about 4541.0095793777. The cubic root of 20620768 is about 274.2215694082.

The spelling of 20620768 in words is "twenty million, six hundred twenty thousand, seven hundred sixty-eight".