22889972 has 48 divisors (see below), whose sum is σ = 47566848. Its totient is φ = 9434880.

The previous prime is 22889969. The next prime is 22890029. The reversal of 22889972 is 27998822.

Its product of digits (290304) is a multiple of the sum of its prime factors (336).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145718 + ... + 145874.

It is an arithmetic number, because the mean of its divisors is an integer number (990976).

Almost surely, 2^22889972 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 22889972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23783424).

22889972 is an abundant number, since it is smaller than the sum of its proper divisors (24676876).

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

22889972 is a wasteful number, since it uses less digits than its factorization.

22889972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 334 counting only the distinct ones).

The product of its digits is 290304, while the sum is 47.

The square root of 22889972 is about 4784.3465593537. The cubic root of 22889972 is about 283.9324874237.

The spelling of 22889972 in words is "twenty-two million, eight hundred eighty-nine thousand, nine hundred seventy-two".