20112738 has 32 divisors (see below), whose sum is σ = 42135552. Its totient is φ = 6392400.

The previous prime is 20112727. The next prime is 20112739. The reversal of 20112738 is 83721102.

It is not an unprimeable number, because it can be changed into a prime (20112739) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12445 + ... + 13967.

It is an arithmetic number, because the mean of its divisors is an integer number (1316736).

Almost surely, 2^20112738 is an apocalyptic number.

20112738 is an abundant number, since it is smaller than the sum of its proper divisors (22022814).

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

20112738 is a wasteful number, since it uses less digits than its factorization.

20112738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1630.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 20112738 is about 4484.7227339045. The cubic root of 20112738 is about 271.9508363421.

The spelling of 20112738 in words is "twenty million, one hundred twelve thousand, seven hundred thirty-eight".