20086188 has 12 divisors (see below), whose sum is σ = 46867800. Its totient is φ = 6695392.

The previous prime is 20086181. The next prime is 20086201. The reversal of 20086188 is 88168002.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (20086181) 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, 836913 + ... + 836936.

It is an arithmetic number, because the mean of its divisors is an integer number (3905650).

Almost surely, 2^20086188 is an apocalyptic number.

It is an amenable number.

20086188 is an abundant number, since it is smaller than the sum of its proper divisors (26781612).

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

20086188 is a wasteful number, since it uses less digits than its factorization.

20086188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1673856 (or 1673854 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 33.

The square root of 20086188 is about 4481.7617071861. The cubic root of 20086188 is about 271.8311199363.

The spelling of 20086188 in words is "twenty million, eighty-six thousand, one hundred eighty-eight".