22891997976 has 64 divisors (see below), whose sum is σ = 58810493280. Its totient is φ = 7420170240.

The previous prime is 22891997971. The next prime is 22891997983. The reversal of 22891997976 is 67979919822.

It is a self number, because there is not a number n which added to its sum of digits gives 22891997976.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22891997971) 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, 1784706 + ... + 1797486.

Almost surely, 2^22891997976 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 22891997976, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29405246640).

22891997976 is an abundant number, since it is smaller than the sum of its proper divisors (35918495304).

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

22891997976 is a wasteful number, since it uses less digits than its factorization.

22891997976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14844 (or 14840 counting only the distinct ones).

The product of its digits is 61725888, while the sum is 69.

The spelling of 22891997976 in words is "twenty-two billion, eight hundred ninety-one million, nine hundred ninety-seven thousand, nine hundred seventy-six".