22722507 has 6 divisors (see below), whose sum is σ = 32821412. Its totient is φ = 15148332.

The previous prime is 22722481. The next prime is 22722509. The reversal of 22722507 is 70522722.

It is a happy number.

It is not a de Polignac number, because 22722507 - 2¹⁰ = 22721483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22722509) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1262353 + ... + 1262370.

Almost surely, 2^22722507 is an apocalyptic number.

22722507 is a deficient number, since it is larger than the sum of its proper divisors (10098905).

22722507 is a wasteful number, since it uses less digits than its factorization.

22722507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2524729 (or 2524726 counting only the distinct ones).

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

The square root of 22722507 is about 4766.8130863293. The cubic root of 22722507 is about 283.2383670967.

The spelling of 22722507 in words is "twenty-two million, seven hundred twenty-two thousand, five hundred seven".