26872281 has 6 divisors (see below), whose sum is σ = 38815530. Its totient is φ = 17914848.

The previous prime is 26872259. The next prime is 26872283. The reversal of 26872281 is 18227862.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 19501056 + 7371225 = 4416^2 + 2715^2 .

It is not a de Polignac number, because 26872281 - 2¹⁸ = 26610137 is a prime.

It is a super-2 number, since 2×26872281² = 1444238972285922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26872283) 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, 1492896 + ... + 1492913.

It is an arithmetic number, because the mean of its divisors is an integer number (6469255).

Almost surely, 2^26872281 is an apocalyptic number.

It is an amenable number.

26872281 is a deficient number, since it is larger than the sum of its proper divisors (11943249).

26872281 is a wasteful number, since it uses less digits than its factorization.

26872281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985815 (or 2985812 counting only the distinct ones).

The product of its digits is 21504, while the sum is 36.

The square root of 26872281 is about 5183.8480880520. The cubic root of 26872281 is about 299.5262188319.

The spelling of 26872281 in words is "twenty-six million, eight hundred seventy-two thousand, two hundred eighty-one".