22748013 has 8 divisors (see below), whose sum is σ = 33700800. Its totient is φ = 15165324.

The previous prime is 22748009. The next prime is 22748027. The reversal of 22748013 is 31084722.

It is not a de Polignac number, because 22748013 - 2² = 22748009 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 842519 = 22748013 / (2 + 2 + 7 + 4 + 8 + 0 + 1 + 3).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22748213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421233 + ... + 421286.

It is an arithmetic number, because the mean of its divisors is an integer number (4212600).

Almost surely, 2^22748013 is an apocalyptic number.

It is an amenable number.

22748013 is a deficient number, since it is larger than the sum of its proper divisors (10952787).

22748013 is an equidigital number, since it uses as much as digits as its factorization.

22748013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 842528 (or 842522 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 22748013 is about 4769.4877083393. The cubic root of 22748013 is about 283.3443057650.

The spelling of 22748013 in words is "twenty-two million, seven hundred forty-eight thousand, thirteen".