20200138 has 16 divisors (see below), whose sum is σ = 34778304. Its totient is φ = 8619840.

The previous prime is 20200133. The next prime is 20200157. The reversal of 20200138 is 83100202.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (20200133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381 + ... + 6367.

It is an arithmetic number, because the mean of its divisors is an integer number (2173644).

Almost surely, 2^20200138 is an apocalyptic number.

20200138 is a deficient number, since it is larger than the sum of its proper divisors (14578166).

20200138 is a wasteful number, since it uses less digits than its factorization.

20200138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6237.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 20200138 is about 4494.4563631211. The cubic root of 20200138 is about 272.3441883438.

The spelling of 20200138 in words is "twenty million, two hundred thousand, one hundred thirty-eight".