20791488 has 28 divisors (see below), whose sum is σ = 55011320. Its totient is φ = 6930432.

The previous prime is 20791487. The next prime is 20791501. The reversal of 20791488 is 88419702.

It is not an unprimeable number, because it can be changed into a prime (20791487) 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, 53953 + ... + 54336.

It is an arithmetic number, because the mean of its divisors is an integer number (1964690).

Almost surely, 2^20791488 is an apocalyptic number.

It is an amenable number.

20791488 is an abundant number, since it is smaller than the sum of its proper divisors (34219832).

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

20791488 is a wasteful number, since it uses less digits than its factorization.

20791488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108304 (or 108294 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 39.

The square root of 20791488 is about 4559.7684151720. The cubic root of 20791488 is about 274.9762535969.

The spelling of 20791488 in words is "twenty million, seven hundred ninety-one thousand, four hundred eighty-eight".