23926013 has 6 divisors (see below), whose sum is σ = 24591546. Its totient is φ = 23278032.

The previous prime is 23926009. The next prime is 23926037. The reversal of 23926013 is 31062932.

It can be written as a sum of positive squares in 3 ways, for example, as 7628644 + 16297369 = 2762^2 + 4037^2 .

It is not a de Polignac number, because 23926013 - 2² = 23926009 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23926043) 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, 7370 + ... + 10107.

It is an arithmetic number, because the mean of its divisors is an integer number (4098591).

Almost surely, 2^23926013 is an apocalyptic number.

It is an amenable number.

23926013 is a deficient number, since it is larger than the sum of its proper divisors (665533).

23926013 is an equidigital number, since it uses as much as digits as its factorization.

23926013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17551 (or 17514 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 26.

The square root of 23926013 is about 4891.4223902665. The cubic root of 23926013 is about 288.1531986179.

Adding to 23926013 its reverse (31062932), we get a palindrome (54988945).

The spelling of 23926013 in words is "twenty-three million, nine hundred twenty-six thousand, thirteen".