22507641 has 12 divisors (see below), whose sum is σ = 35012068. Its totient is φ = 13850784.

The previous prime is 22507637. The next prime is 22507649. The reversal of 22507641 is 14670522.

It can be written as a sum of positive squares in 2 ways, for example, as 14470416 + 8037225 = 3804^2 + 2835^2 .

It is not a de Polignac number, because 22507641 - 2² = 22507637 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22507649) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96070 + ... + 96303.

Almost surely, 2^22507641 is an apocalyptic number.

It is an amenable number.

22507641 is a deficient number, since it is larger than the sum of its proper divisors (12504427).

22507641 is a wasteful number, since it uses less digits than its factorization.

22507641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192392 (or 192389 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 22507641 is about 4744.2218540030. The cubic root of 22507641 is about 282.3427626309.

The spelling of 22507641 in words is "twenty-two million, five hundred seven thousand, six hundred forty-one".