22913472 has 56 divisors (see below), whose sum is σ = 61155072. Its totient is φ = 7571200.

The previous prime is 22913461. The next prime is 22913477. The reversal of 22913472 is 27431922.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22913477) by changing a digit.

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, 24697 + ... + 25607.

Almost surely, 2^22913472 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 22913472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30577536).

22913472 is an abundant number, since it is smaller than the sum of its proper divisors (38241600).

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

22913472 is a wasteful number, since it uses less digits than its factorization.

22913472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1057 (or 1047 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 22913472 is about 4786.8018551012. The cubic root of 22913472 is about 284.0296206624.

The spelling of 22913472 in words is "twenty-two million, nine hundred thirteen thousand, four hundred seventy-two".