22302649 has 4 divisors (see below), whose sum is σ = 22680720. Its totient is φ = 21924580.

The previous prime is 22302613. The next prime is 22302667. The reversal of 22302649 is 94620322.

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 22302649 - 2¹¹ = 22300601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22303649) 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, 188947 + ... + 189064.

It is an arithmetic number, because the mean of its divisors is an integer number (5670180).

Almost surely, 2^22302649 is an apocalyptic number.

It is an amenable number.

22302649 is a deficient number, since it is larger than the sum of its proper divisors (378071).

22302649 is an equidigital number, since it uses as much as digits as its factorization.

22302649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378070.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 22302649 is about 4722.5680513890. The cubic root of 22302649 is about 281.4829862670.

The spelling of 22302649 in words is "twenty-two million, three hundred two thousand, six hundred forty-nine".