22711994028 has 72 divisors (see below), whose sum is σ = 60126939600. Its totient is φ = 7495675200.

The previous prime is 22711994027. The next prime is 22711994029. The reversal of 22711994028 is 82049911722.

22711994028 is a `hidden beast` number, since 227 + 1 + 19 + 9 + 402 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (22711994027) and next prime (22711994029).

It is not an unprimeable number, because it can be changed into a prime (22711994027) 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, 17503 + ... + 213846.

Almost surely, 2^22711994028 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 22711994028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30063469800).

22711994028 is an abundant number, since it is smaller than the sum of its proper divisors (37414945572).

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

22711994028 is a wasteful number, since it uses less digits than its factorization.

22711994028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231469 (or 231455 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The spelling of 22711994028 in words is "twenty-two billion, seven hundred eleven million, nine hundred ninety-four thousand, twenty-eight".