22641945 has 8 divisors (see below), whose sum is σ = 36227136. Its totient is φ = 12075696.

The previous prime is 22641937. The next prime is 22641961. The reversal of 22641945 is 54914622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 22641945 - 2³ = 22641937 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 754717 + ... + 754746.

It is an arithmetic number, because the mean of its divisors is an integer number (4528392).

Almost surely, 2^22641945 is an apocalyptic number.

It is an amenable number.

22641945 is a deficient number, since it is larger than the sum of its proper divisors (13585191).

22641945 is a wasteful number, since it uses less digits than its factorization.

22641945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509471.

The product of its digits is 17280, while the sum is 33.

The square root of 22641945 is about 4758.3552830784. The cubic root of 22641945 is about 282.9032328658.

The spelling of 22641945 in words is "twenty-two million, six hundred forty-one thousand, nine hundred forty-five".