22428744 has 32 divisors (see below), whose sum is σ = 60385920. Its totient is φ = 6901056.

The previous prime is 22428737. The next prime is 22428751. The reversal of 22428744 is 44782422.

It is an interprime number because it is at equal distance from previous prime (22428737) and next prime (22428751).

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, 35632 + ... + 36255.

It is an arithmetic number, because the mean of its divisors is an integer number (1887060).

Almost surely, 2^22428744 is an apocalyptic number.

22428744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22428744 is an abundant number, since it is smaller than the sum of its proper divisors (37957176).

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

22428744 is a wasteful number, since it uses less digits than its factorization.

22428744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71909 (or 71905 counting only the distinct ones).

The product of its digits is 28672, while the sum is 33.

The square root of 22428744 is about 4735.8994921768. The cubic root of 22428744 is about 282.0124736699.

The spelling of 22428744 in words is "twenty-two million, four hundred twenty-eight thousand, seven hundred forty-four".