23998657226 has 16 divisors (see below), whose sum is σ = 36612923400. Its totient is φ = 11795908608.

The previous prime is 23998657213. The next prime is 23998657229. The reversal of 23998657226 is 62275689932.

It is a Cunningham number, because it is equal to 154915²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 21830358001 + 2168299225 = 147751^2 + 46565^2 .

It is not an unprimeable number, because it can be changed into a prime (23998657229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358871 + ... + 420458.

Almost surely, 2^23998657226 is an apocalyptic number.

23998657226 is a deficient number, since it is larger than the sum of its proper divisors (12614266174).

23998657226 is a wasteful number, since it uses less digits than its factorization.

23998657226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 779593.

The product of its digits is 19595520, while the sum is 59.

The spelling of 23998657226 in words is "twenty-three billion, nine hundred ninety-eight million, six hundred fifty-seven thousand, two hundred twenty-six".