20660488 has 16 divisors (see below), whose sum is σ = 38825280. Its totient is φ = 10307088.

The previous prime is 20660483. The next prime is 20660501. The reversal of 20660488 is 88406602.

It is not an unprimeable number, because it can be changed into a prime (20660483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1245 + ... + 6547.

It is an arithmetic number, because the mean of its divisors is an integer number (2426580).

Almost surely, 2^20660488 is an apocalyptic number.

It is an amenable number.

20660488 is a deficient number, since it is larger than the sum of its proper divisors (18164792).

20660488 is a wasteful number, since it uses less digits than its factorization.

20660488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5796 (or 5792 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 20660488 is about 4545.3809521315. The cubic root of 20660488 is about 274.3975262352.

The spelling of 20660488 in words is "twenty million, six hundred sixty thousand, four hundred eighty-eight".