20718848 has 18 divisors (see below), whose sum is σ = 41357274. Its totient is φ = 10359296.

The previous prime is 20718839. The next prime is 20718851. The reversal of 20718848 is 84881702.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 16908544 + 3810304 = 4112^2 + 1952^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40211 + ... + 40722.

Almost surely, 2^20718848 is an apocalyptic number.

It is an amenable number.

20718848 is a deficient number, since it is larger than the sum of its proper divisors (20638426).

20718848 is an frugal number, since it uses more digits than its factorization.

20718848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80949 (or 80935 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 38.

The square root of 20718848 is about 4551.7961290023. The cubic root of 20718848 is about 274.6556483258.

The spelling of 20718848 in words is "twenty million, seven hundred eighteen thousand, eight hundred forty-eight".