22620445 has 8 divisors (see below), whose sum is σ = 27170136. Its totient is φ = 18079296.

The previous prime is 22620439. The next prime is 22620457. The reversal of 22620445 is 54402622.

It can be written as a sum of positive squares in 4 ways, for example, as 86436 + 22534009 = 294^2 + 4747^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 22620445 - 2¹¹ = 22618397 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 8719 + ... + 11011.

It is an arithmetic number, because the mean of its divisors is an integer number (3396267).

Almost surely, 2^22620445 is an apocalyptic number.

It is an amenable number.

22620445 is a deficient number, since it is larger than the sum of its proper divisors (4549691).

22620445 is a wasteful number, since it uses less digits than its factorization.

22620445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4271.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 22620445 is about 4756.0955625387. The cubic root of 22620445 is about 282.8136594989.

The spelling of 22620445 in words is "twenty-two million, six hundred twenty thousand, four hundred forty-five".