13023857 has 24 divisors (see below), whose sum is σ = 16804512. Its totient is φ = 9979200.

The previous prime is 13023851. The next prime is 13023859. The reversal of 13023857 is 75832031.

It is not a de Polignac number, because 13023857 - 2⁶ = 13023793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13023851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 39182 + ... + 39512.

It is an arithmetic number, because the mean of its divisors is an integer number (700188).

Almost surely, 2^13023857 is an apocalyptic number.

It is an amenable number.

13023857 is a deficient number, since it is larger than the sum of its proper divisors (3780655).

13023857 is a wasteful number, since it uses less digits than its factorization.

13023857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 429 (or 422 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 13023857 is about 3608.8581296582. The cubic root of 13023857 is about 235.2772162382.

Adding to 13023857 its reverse (75832031), we get a palindrome (88855888).

The spelling of 13023857 in words is "thirteen million, twenty-three thousand, eight hundred fifty-seven".