22771968 has 72 divisors (see below), whose sum is σ = 61320000. Its totient is φ = 7501824.

The previous prime is 22771939. The next prime is 22771979. The reversal of 22771968 is 86917722.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114333 + ... + 114531.

Almost surely, 2^22771968 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 22771968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30660000).

22771968 is an abundant number, since it is smaller than the sum of its proper divisors (38548032).

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

22771968 is a wasteful number, since it uses less digits than its factorization.

22771968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367 (or 353 counting only the distinct ones).

The product of its digits is 84672, while the sum is 42.

The square root of 22771968 is about 4771.9983235538. The cubic root of 22771968 is about 283.4437302977.

The spelling of 22771968 in words is "twenty-two million, seven hundred seventy-one thousand, nine hundred sixty-eight".