20079136 has 96 divisors (see below), whose sum is σ = 51166080. Its totient is φ = 7526400.

The previous prime is 20079127. The next prime is 20079139. The reversal of 20079136 is 63197002.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (20079139) 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, 71316 + ... + 71596.

It is an arithmetic number, because the mean of its divisors is an integer number (532980).

Almost surely, 2^20079136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20079136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25583040).

20079136 is an abundant number, since it is smaller than the sum of its proper divisors (31086944).

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

20079136 is a wasteful number, since it uses less digits than its factorization.

20079136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 20079136 is about 4480.9748939265. The cubic root of 20079136 is about 271.7993040862.

The spelling of 20079136 in words is "twenty million, seventy-nine thousand, one hundred thirty-six".