2628157 has 4 divisors (see below), whose sum is σ = 3003616. Its totient is φ = 2252700.

The previous prime is 2628139. The next prime is 2628163. The reversal of 2628157 is 7518262.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2628157 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2628107) 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, 187719 + ... + 187732.

It is an arithmetic number, because the mean of its divisors is an integer number (750904).

2^2628157 is an apocalyptic number.

It is an amenable number.

2628157 is a deficient number, since it is larger than the sum of its proper divisors (375459).

2628157 is an equidigital number, since it uses as much as digits as its factorization.

2628157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375458.

The product of its digits is 6720, while the sum is 31.

The square root of 2628157 is about 1621.1591531987. The cubic root of 2628157 is about 138.0014877666.

The spelling of 2628157 in words is "two million, six hundred twenty-eight thousand, one hundred fifty-seven".