22490751 has 4 divisors (see below), whose sum is σ = 29987672. Its totient is φ = 14993832.

The previous prime is 22490723. The next prime is 22490753. The reversal of 22490751 is 15709422.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 22490751 - 2¹¹ = 22488703 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 (22490753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3748456 + ... + 3748461.

It is an arithmetic number, because the mean of its divisors is an integer number (7496918).

Almost surely, 2^22490751 is an apocalyptic number.

22490751 is a deficient number, since it is larger than the sum of its proper divisors (7496921).

22490751 is an equidigital number, since it uses as much as digits as its factorization.

22490751 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7496920.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 22490751 is about 4742.4414598390. The cubic root of 22490751 is about 282.2721205083.

The spelling of 22490751 in words is "twenty-two million, four hundred ninety thousand, seven hundred fifty-one".