22037728818 has 32 divisors (see below), whose sum is σ = 51996856320. Its totient is φ = 6093380880.

The previous prime is 22037728799. The next prime is 22037728819. The reversal of 22037728818 is 81882773022.

It is a super-2 number, since 2×22037728818² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (22037728819) 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, 8461728 + ... + 8464331.

It is an arithmetic number, because the mean of its divisors is an integer number (1624901760).

Almost surely, 2^22037728818 is an apocalyptic number.

22037728818 is an abundant number, since it is smaller than the sum of its proper divisors (29959127502).

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

22037728818 is a wasteful number, since it uses less digits than its factorization.

22037728818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16926102.

The product of its (nonzero) digits is 602112, while the sum is 48.

The spelling of 22037728818 in words is "twenty-two billion, thirty-seven million, seven hundred twenty-eight thousand, eight hundred eighteen".