22249612 has 96 divisors (see below), whose sum is σ = 52254720. Its totient is φ = 8037120.

The previous prime is 22249573. The next prime is 22249613. The reversal of 22249612 is 21694222.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22249613) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 419778 + ... + 419830.

It is an arithmetic number, because the mean of its divisors is an integer number (544320).

Almost surely, 2^22249612 is an apocalyptic number.

22249612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22249612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26127360).

22249612 is an abundant number, since it is smaller than the sum of its proper divisors (30005108).

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

22249612 is a wasteful number, since it uses less digits than its factorization.

22249612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 149 counting only the distinct ones).

The product of its digits is 3456, while the sum is 28.

The square root of 22249612 is about 4716.9494379313. The cubic root of 22249612 is about 281.2596815103.

The spelling of 22249612 in words is "twenty-two million, two hundred forty-nine thousand, six hundred twelve".