12857895 has 12 divisors (see below), whose sum is σ = 22287096. Its totient is φ = 6857520.

The previous prime is 12857893. The next prime is 12857909. The reversal of 12857895 is 59875821.

It is a happy number.

It is not a de Polignac number, because 12857895 - 2¹ = 12857893 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 285731 = 12857895 / (1 + 2 + 8 + 5 + 7 + 8 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 12857895.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12857891) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 142821 + ... + 142910.

It is an arithmetic number, because the mean of its divisors is an integer number (1857258).

Almost surely, 2^12857895 is an apocalyptic number.

12857895 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12857895 is a deficient number, since it is larger than the sum of its proper divisors (9429201).

12857895 is a wasteful number, since it uses less digits than its factorization.

12857895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285742 (or 285739 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 12857895 is about 3585.7907077798. The cubic root of 12857895 is about 234.2735678421.

It can be divided in two parts, 1285 and 7895, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 12857895 in words is "twelve million, eight hundred fifty-seven thousand, eight hundred ninety-five".