22070745 has 16 divisors (see below), whose sum is σ = 39237120. Its totient is φ = 11770992.

The previous prime is 22070717. The next prime is 22070753. The reversal of 22070745 is 54707022.

It is a de Polignac number, because none of the positive numbers 2^k-22070745 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 81609 + ... + 81878.

It is an arithmetic number, because the mean of its divisors is an integer number (2452320).

Almost surely, 2^22070745 is an apocalyptic number.

It is an amenable number.

22070745 is a deficient number, since it is larger than the sum of its proper divisors (17166375).

22070745 is a wasteful number, since it uses less digits than its factorization.

22070745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163501 (or 163495 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 22070745 is about 4697.9511491713. The cubic root of 22070745 is about 280.5039605949.

Adding to 22070745 its reverse (54707022), we get a palindrome (76777767).

The spelling of 22070745 in words is "twenty-two million, seventy thousand, seven hundred forty-five".