20004768 has 72 divisors (see below), whose sum is σ = 65022048. Its totient is φ = 5715072.

The previous prime is 20004749. The next prime is 20004773. The reversal of 20004768 is 86740002.

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2946 + ... + 6977.

It is an arithmetic number, because the mean of its divisors is an integer number (903084).

Almost surely, 2^20004768 is an apocalyptic number.

20004768 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

20004768 is an abundant number, since it is smaller than the sum of its proper divisors (45017280).

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

20004768 is a wasteful number, since it uses less digits than its factorization.

20004768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9946 (or 9935 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 20004768 is about 4472.6690018377. The cubic root of 20004768 is about 271.4633305176.

The spelling of 20004768 in words is "twenty million, four thousand, seven hundred sixty-eight".