20260188 has 36 divisors (see below), whose sum is σ = 55154008. Its totient is φ = 6233760.

The previous prime is 20260169. The next prime is 20260189. The reversal of 20260188 is 88106202.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20260189) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 21178 + ... + 22113.

Almost surely, 2^20260188 is an apocalyptic number.

It is an amenable number.

20260188 is an abundant number, since it is smaller than the sum of its proper divisors (34893820).

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

20260188 is a wasteful number, since it uses less digits than its factorization.

20260188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43314 (or 43309 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 27.

The square root of 20260188 is about 4501.1318576554. The cubic root of 20260188 is about 272.6137919391.

The spelling of 20260188 in words is "twenty million, two hundred sixty thousand, one hundred eighty-eight".