26972231 has 18 divisors (see below), whose sum is σ = 32127480. Its totient is φ = 22616880.

The previous prime is 26972227. The next prime is 26972237. The reversal of 26972231 is 13227962.

It is a happy number.

It is not a de Polignac number, because 26972231 - 2² = 26972227 is a prime.

It is a super-2 number, since 2×26972231² = 1455002490234722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26972237) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 19790 + ... + 21108.

It is an arithmetic number, because the mean of its divisors is an integer number (1784860).

Almost surely, 2^26972231 is an apocalyptic number.

26972231 is a deficient number, since it is larger than the sum of its proper divisors (5155249).

26972231 is a wasteful number, since it uses less digits than its factorization.

26972231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367 (or 1343 counting only the distinct ones).

The product of its digits is 9072, while the sum is 32.

The square root of 26972231 is about 5193.4796620378. The cubic root of 26972231 is about 299.8971165726.

The spelling of 26972231 in words is "twenty-six million, nine hundred seventy-two thousand, two hundred thirty-one".