26287231 has 4 divisors (see below), whose sum is σ = 26334000. Its totient is φ = 26240464.

The previous prime is 26287213. The next prime is 26287259. The reversal of 26287231 is 13278262.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26287231 - 2⁵ = 26287199 is a prime.

It is a super-2 number, since 2×26287231² = 1382037027294722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 26287193 and 26287202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26287201) 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, 22531 + ... + 23668.

It is an arithmetic number, because the mean of its divisors is an integer number (6583500).

Almost surely, 2^26287231 is an apocalyptic number.

26287231 is a deficient number, since it is larger than the sum of its proper divisors (46769).

26287231 is an equidigital number, since it uses as much as digits as its factorization.

26287231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46768.

The product of its digits is 8064, while the sum is 31.

The square root of 26287231 is about 5127.1074691292. The cubic root of 26287231 is about 297.3365380295.

The spelling of 26287231 in words is "twenty-six million, two hundred eighty-seven thousand, two hundred thirty-one".