20088396 has 72 divisors (see below), whose sum is σ = 54774720. Its totient is φ = 6187104.

The previous prime is 20088391. The next prime is 20088427. The reversal of 20088396 is 69388002.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 20088396.

It is not an unprimeable number, because it can be changed into a prime (20088391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29071 + ... + 29753.

It is an arithmetic number, because the mean of its divisors is an integer number (760760).

Almost surely, 2^20088396 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 20088396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27387360).

20088396 is an abundant number, since it is smaller than the sum of its proper divisors (34686324).

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

20088396 is a wasteful number, since it uses less digits than its factorization.

20088396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755 (or 750 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 20088396 is about 4482.0080321213. The cubic root of 20088396 is about 271.8410800330.

It can be divided in two parts, 2008 and 8396, that added together give a square (10404 = 102²).

The spelling of 20088396 in words is "twenty million, eighty-eight thousand, three hundred ninety-six".