22987776 has 88 divisors (see below), whose sum is σ = 70089280. Its totient is φ = 6561792.

The previous prime is 22987753. The next prime is 22987793. The reversal of 22987776 is 67778922.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20970 + ... + 22038.

Almost surely, 2^22987776 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 22987776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35044640).

22987776 is an abundant number, since it is smaller than the sum of its proper divisors (47101504).

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

22987776 is a wasteful number, since it uses less digits than its factorization.

22987776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1099 (or 1081 counting only the distinct ones).

The product of its digits is 592704, while the sum is 48.

The square root of 22987776 is about 4794.5569138347. The cubic root of 22987776 is about 284.3363072744.

The spelling of 22987776 in words is "twenty-two million, nine hundred eighty-seven thousand, seven hundred seventy-six".