26988231 has 8 divisors (see below), whose sum is σ = 38101104. Its totient is φ = 16933760.

The previous prime is 26988229. The next prime is 26988233. The reversal of 26988231 is 13288962.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (26988229) and next prime (26988233).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 26988231 - 2¹ = 26988229 is a prime.

It is a super-2 number, since 2×26988231² = 1456729225018722, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 26988231.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26988233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264540 + ... + 264641.

It is an arithmetic number, because the mean of its divisors is an integer number (4762638).

Almost surely, 2^26988231 is an apocalyptic number.

26988231 is a deficient number, since it is larger than the sum of its proper divisors (11112873).

26988231 is a wasteful number, since it uses less digits than its factorization.

26988231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529201.

The product of its digits is 41472, while the sum is 39.

The square root of 26988231 is about 5195.0198267187. The cubic root of 26988231 is about 299.9564047763.

The spelling of 26988231 in words is "twenty-six million, nine hundred eighty-eight thousand, two hundred thirty-one".