26628157 has 2 divisors, whose sum is σ = 26628158. Its totient is φ = 26628156.

The previous prime is 26628113. The next prime is 26628187. The reversal of 26628157 is 75182662.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21659716 + 4968441 = 4654^2 + 2229^2 .

It is a cyclic number.

It is not a de Polignac number, because 26628157 - 2⁷ = 26628029 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26628187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13314078 + 13314079.

It is an arithmetic number, because the mean of its divisors is an integer number (13314079).

Almost surely, 2^26628157 is an apocalyptic number.

It is an amenable number.

26628157 is a deficient number, since it is larger than the sum of its proper divisors (1).

26628157 is an equidigital number, since it uses as much as digits as its factorization.

26628157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40320, while the sum is 37.

The square root of 26628157 is about 5160.2477653694. The cubic root of 26628157 is about 298.6164326510.

The spelling of 26628157 in words is "twenty-six million, six hundred twenty-eight thousand, one hundred fifty-seven".