20794720 has 24 divisors (see below), whose sum is σ = 49127904. Its totient is φ = 8317824.

The previous prime is 20794699. The next prime is 20794747. The reversal of 20794720 is 2749702.

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 3 ways as a sum of consecutive naturals, for example, 64824 + ... + 65143.

It is an arithmetic number, because the mean of its divisors is an integer number (2046996).

Almost surely, 2^20794720 is an apocalyptic number.

20794720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20794720 is an abundant number, since it is smaller than the sum of its proper divisors (28333184).

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

20794720 is a wasteful number, since it uses less digits than its factorization.

20794720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129982 (or 129974 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 31.

The square root of 20794720 is about 4560.1228053639. The cubic root of 20794720 is about 274.9905010493.

The spelling of 20794720 in words is "twenty million, seven hundred ninety-four thousand, seven hundred twenty".