20088556 has 12 divisors (see below), whose sum is σ = 35751240. Its totient is φ = 9873920.

The previous prime is 20088539. The next prime is 20088559. The reversal of 20088556 is 65588002.

It is not an unprimeable number, because it can be changed into a prime (20088559) 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, 42325 + ... + 42796.

It is an arithmetic number, because the mean of its divisors is an integer number (2979270).

Almost surely, 2^20088556 is an apocalyptic number.

It is an amenable number.

20088556 is a deficient number, since it is larger than the sum of its proper divisors (15662684).

20088556 is a wasteful number, since it uses less digits than its factorization.

20088556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85184 (or 85182 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The square root of 20088556 is about 4482.0258812283. The cubic root of 20088556 is about 271.8418017508.

The spelling of 20088556 in words is "twenty million, eighty-eight thousand, five hundred fifty-six".