26157213 has 6 divisors (see below), whose sum is σ = 37782654. Its totient is φ = 17438136.

The previous prime is 26157199. The next prime is 26157223. The reversal of 26157213 is 31275162.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 21040569 + 5116644 = 4587^2 + 2262^2 .

It is not a de Polignac number, because 26157213 - 2⁹ = 26156701 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26157223) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1453170 + ... + 1453187.

It is an arithmetic number, because the mean of its divisors is an integer number (6297109).

Almost surely, 2^26157213 is an apocalyptic number.

It is an amenable number.

26157213 is a deficient number, since it is larger than the sum of its proper divisors (11625441).

26157213 is a wasteful number, since it uses less digits than its factorization.

26157213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906363 (or 2906360 counting only the distinct ones).

The product of its digits is 2520, while the sum is 27.

The square root of 26157213 is about 5114.4122829510. The cubic root of 26157213 is about 296.8455136439.

The spelling of 26157213 in words is "twenty-six million, one hundred fifty-seven thousand, two hundred thirteen".