20801488 has 20 divisors (see below), whose sum is σ = 40965508. Its totient is φ = 10229760.

The previous prime is 20801483. The next prime is 20801507. The reversal of 20801488 is 88410802.

It can be written as a sum of positive squares in 2 ways, for example, as 2585664 + 18215824 = 1608^2 + 4268^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20801483) 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, 9681 + ... + 11632.

Almost surely, 2^20801488 is an apocalyptic number.

It is an amenable number.

20801488 is a deficient number, since it is larger than the sum of its proper divisors (20164020).

20801488 is a wasteful number, since it uses less digits than its factorization.

20801488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21382 (or 21376 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 31.

The square root of 20801488 is about 4560.8648302707. The cubic root of 20801488 is about 275.0203312792.

The spelling of 20801488 in words is "twenty million, eight hundred one thousand, four hundred eighty-eight".