22748621 has 8 divisors (see below), whose sum is σ = 26204160. Its totient is φ = 19344528.

The previous prime is 22748597. The next prime is 22748629. The reversal of 22748621 is 12684722.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-22748621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22748629) 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, 11906 + ... + 13683.

It is an arithmetic number, because the mean of its divisors is an integer number (3275520).

Almost surely, 2^22748621 is an apocalyptic number.

It is an amenable number.

22748621 is a deficient number, since it is larger than the sum of its proper divisors (3455539).

22748621 is a wasteful number, since it uses less digits than its factorization.

22748621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25723.

The product of its digits is 10752, while the sum is 32.

The square root of 22748621 is about 4769.5514464151. The cubic root of 22748621 is about 283.3468301145.

The spelling of 22748621 in words is "twenty-two million, seven hundred forty-eight thousand, six hundred twenty-one".