22492321 has 4 divisors (see below), whose sum is σ = 23470272. Its totient is φ = 21514372.

The previous prime is 22492319. The next prime is 22492331. The reversal of 22492321 is 12329422.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22492321 - 2¹ = 22492319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22492331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 488941 + ... + 488986.

It is an arithmetic number, because the mean of its divisors is an integer number (5867568).

Almost surely, 2^22492321 is an apocalyptic number.

It is an amenable number.

22492321 is a deficient number, since it is larger than the sum of its proper divisors (977951).

22492321 is an equidigital number, since it uses as much as digits as its factorization.

22492321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977950.

The product of its digits is 1728, while the sum is 25.

The square root of 22492321 is about 4742.6069835060. The cubic root of 22492321 is about 282.2786884959.

The spelling of 22492321 in words is "twenty-two million, four hundred ninety-two thousand, three hundred twenty-one".