22308645 has 16 divisors (see below), whose sum is σ = 35969472. Its totient is φ = 11806080.

The previous prime is 22308631. The next prime is 22308653. The reversal of 22308645 is 54680322.

It is not a de Polignac number, because 22308645 - 2⁵ = 22308613 is a prime.

It is a super-3 number, since 3×22308645³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3712 + ... + 7641.

It is an arithmetic number, because the mean of its divisors is an integer number (2248092).

Almost surely, 2^22308645 is an apocalyptic number.

It is an amenable number.

22308645 is a deficient number, since it is larger than the sum of its proper divisors (13660827).

22308645 is a wasteful number, since it uses less digits than its factorization.

22308645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11492.

The product of its (nonzero) digits is 11520, while the sum is 30.

The square root of 22308645 is about 4723.2028328244. The cubic root of 22308645 is about 281.5082092911.

Adding to 22308645 its reverse (54680322), we get a palindrome (76988967).

The spelling of 22308645 in words is "twenty-two million, three hundred eight thousand, six hundred forty-five".