22645945 has 16 divisors (see below), whose sum is σ = 31569408. Its totient is φ = 15272640.

The previous prime is 22645939. The next prime is 22645951. The reversal of 22645945 is 54954622.

It is an interprime number because it is at equal distance from previous prime (22645939) and next prime (22645951).

It is not a de Polignac number, because 22645945 - 2³ = 22645937 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3169 + ... + 7438.

It is an arithmetic number, because the mean of its divisors is an integer number (1973088).

Almost surely, 2^22645945 is an apocalyptic number.

It is an amenable number.

22645945 is a deficient number, since it is larger than the sum of its proper divisors (8923463).

22645945 is a wasteful number, since it uses less digits than its factorization.

22645945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10680.

The product of its digits is 86400, while the sum is 37.

The square root of 22645945 is about 4758.7755778141. The cubic root of 22645945 is about 282.9198914214.

The spelling of 22645945 in words is "twenty-two million, six hundred forty-five thousand, nine hundred forty-five".