23828857 has 16 divisors (see below), whose sum is σ = 26387200. Its totient is φ = 21384000.

The previous prime is 23828843. The next prime is 23828873. The reversal of 23828857 is 75882832.

It is a cyclic number.

It is not a de Polignac number, because 23828857 - 2¹⁵ = 23796089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23828887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119644 + ... + 119842.

It is an arithmetic number, because the mean of its divisors is an integer number (1649200).

Almost surely, 2^23828857 is an apocalyptic number.

It is an amenable number.

23828857 is a deficient number, since it is larger than the sum of its proper divisors (2558343).

23828857 is a wasteful number, since it uses less digits than its factorization.

23828857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424.

The product of its digits is 215040, while the sum is 43.

The square root of 23828857 is about 4881.4810252627. The cubic root of 23828857 is about 287.7626363744.

The spelling of 23828857 in words is "twenty-three million, eight hundred twenty-eight thousand, eight hundred fifty-seven".