22620045 has 32 divisors (see below), whose sum is σ = 41545728. Its totient is φ = 10294848.

The previous prime is 22620043. The next prime is 22620053. The reversal of 22620045 is 54002622.

It is not a de Polignac number, because 22620045 - 2¹ = 22620043 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22620041) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 38242 + ... + 38828.

It is an arithmetic number, because the mean of its divisors is an integer number (1298304).

Almost surely, 2^22620045 is an apocalyptic number.

It is an amenable number.

22620045 is a deficient number, since it is larger than the sum of its proper divisors (18925683).

22620045 is a wasteful number, since it uses less digits than its factorization.

22620045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 969.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 22620045 is about 4756.0535110530. The cubic root of 22620045 is about 282.8119924800.

Adding to 22620045 its reverse (54002622), we get a palindrome (76622667).

The spelling of 22620045 in words is "twenty-two million, six hundred twenty thousand, forty-five".