20939088 has 20 divisors (see below), whose sum is σ = 54092768. Its totient is φ = 6979680.

The previous prime is 20939071. The next prime is 20939123. The reversal of 20939088 is 88093902.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218068 + ... + 218163.

Almost surely, 2^20939088 is an apocalyptic number.

It is an amenable number.

20939088 is an abundant number, since it is smaller than the sum of its proper divisors (33153680).

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

20939088 is a wasteful number, since it uses less digits than its factorization.

20939088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 436242 (or 436236 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 20939088 is about 4575.9248245573. The cubic root of 20939088 is about 275.6254107593.

The spelling of 20939088 in words is "twenty million, nine hundred thirty-nine thousand, eighty-eight".