2868157 has 4 divisors (see below), whose sum is σ = 2872156. Its totient is φ = 2864160.

The previous prime is 2868149. The next prime is 2868161. The reversal of 2868157 is 7518682.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7518682 = 2 ⋅3759341.

It can be written as a sum of positive squares in 2 ways, for example, as 1454436 + 1413721 = 1206^2 + 1189^2 .

It is a cyclic number.

It is not a de Polignac number, because 2868157 - 2³ = 2868149 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 (2868137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 594 + ... + 2467.

It is an arithmetic number, because the mean of its divisors is an integer number (718039).

2^2868157 is an apocalyptic number.

It is an amenable number.

2868157 is a deficient number, since it is larger than the sum of its proper divisors (3999).

2868157 is an equidigital number, since it uses as much as digits as its factorization.

2868157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3998.

The product of its digits is 26880, while the sum is 37.

The square root of 2868157 is about 1693.5634030056. The cubic root of 2868157 is about 142.0804444010.

It can be divided in two parts, 2868 and 157, that added together give a square (3025 = 55²).

The spelling of 2868157 in words is "two million, eight hundred sixty-eight thousand, one hundred fifty-seven".