22721348 has 24 divisors (see below), whose sum is σ = 43370880. Its totient is φ = 10352160.

The previous prime is 22721327. The next prime is 22721353. The reversal of 22721348 is 84312722.

It is a self number, because there is not a number n which added to its sum of digits gives 22721348.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1343 + ... + 6873.

It is an arithmetic number, because the mean of its divisors is an integer number (1807120).

Almost surely, 2^22721348 is an apocalyptic number.

It is an amenable number.

22721348 is a deficient number, since it is larger than the sum of its proper divisors (20649532).

22721348 is a wasteful number, since it uses less digits than its factorization.

22721348 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5627 (or 5625 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 22721348 is about 4766.6915150867. The cubic root of 22721348 is about 283.2335513305.

The spelling of 22721348 in words is "twenty-two million, seven hundred twenty-one thousand, three hundred forty-eight".