20136208 has 20 divisors (see below), whose sum is σ = 40360140. Its totient is φ = 9720704.

The previous prime is 20136197. The next prime is 20136217. The reversal of 20136208 is 80263102.

It can be written as a sum of positive squares in 2 ways, for example, as 14992384 + 5143824 = 3872^2 + 2268^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21235 + ... + 22162.

It is an arithmetic number, because the mean of its divisors is an integer number (2018007).

Almost surely, 2^20136208 is an apocalyptic number.

It is an amenable number.

20136208 is an abundant number, since it is smaller than the sum of its proper divisors (20223932).

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

20136208 is a wasteful number, since it uses less digits than its factorization.

20136208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43434 (or 43428 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 20136208 is about 4487.3386321961. The cubic root of 20136208 is about 272.0565770429.

The spelling of 20136208 in words is "twenty million, one hundred thirty-six thousand, two hundred eight".