20712488 has 16 divisors (see below), whose sum is σ = 38885280. Its totient is φ = 10343088.

The previous prime is 20712479. The next prime is 20712491. The reversal of 20712488 is 88421702.

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, 9431 + ... + 11417.

It is an arithmetic number, because the mean of its divisors is an integer number (2430330).

Almost surely, 2^20712488 is an apocalyptic number.

It is an amenable number.

20712488 is a deficient number, since it is larger than the sum of its proper divisors (18172792).

20712488 is a wasteful number, since it uses less digits than its factorization.

20712488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3296 (or 3292 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 32.

The square root of 20712488 is about 4551.0974500663. The cubic root of 20712488 is about 274.6275420545.

The spelling of 20712488 in words is "twenty million, seven hundred twelve thousand, four hundred eighty-eight".