20788882 has 8 divisors (see below), whose sum is σ = 32258700. Its totient is φ = 10035984.

The previous prime is 20788877. The next prime is 20788903. The reversal of 20788882 is 28888702.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20693401 + 95481 = 4549^2 + 309^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20788882² = 864355229619848, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179157 + ... + 179272.

Almost surely, 2^20788882 is an apocalyptic number.

20788882 is a deficient number, since it is larger than the sum of its proper divisors (11469818).

20788882 is a wasteful number, since it uses less digits than its factorization.

20788882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358460.

The product of its (nonzero) digits is 114688, while the sum is 43.

The square root of 20788882 is about 4559.4826460905. The cubic root of 20788882 is about 274.9647646315.

The spelling of 20788882 in words is "twenty million, seven hundred eighty-eight thousand, eight hundred eighty-two".