23126857 has 16 divisors (see below), whose sum is σ = 26488000. Its totient is φ = 20015424.

The previous prime is 23126849. The next prime is 23126861. The reversal of 23126857 is 75862132.

It is a happy number.

It is not a de Polignac number, because 23126857 - 2³ = 23126849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23126897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26494 + ... + 27352.

It is an arithmetic number, because the mean of its divisors is an integer number (1655500).

Almost surely, 2^23126857 is an apocalyptic number.

23126857 is the 2777-th hex number.

It is an amenable number.

23126857 is a deficient number, since it is larger than the sum of its proper divisors (3361143).

23126857 is a wasteful number, since it uses less digits than its factorization.

23126857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1000.

The product of its digits is 20160, while the sum is 34.

The square root of 23126857 is about 4809.0390932077. The cubic root of 23126857 is about 284.9085866668.

Adding to 23126857 its reverse (75862132), we get a palindrome (98988989).

The spelling of 23126857 in words is "twenty-three million, one hundred twenty-six thousand, eight hundred fifty-seven".