26808831 has 72 divisors (see below), whose sum is σ = 48657024. Its totient is φ = 14152320.

The previous prime is 26808799. The next prime is 26808841. The reversal of 26808831 is 13880862.

It is not a de Polignac number, because 26808831 - 2⁵ = 26808799 is a prime.

It is a super-2 number, since 2×26808831² = 1437426839173122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26808841) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 505801 + ... + 505853.

It is an arithmetic number, because the mean of its divisors is an integer number (675792).

Almost surely, 2^26808831 is an apocalyptic number.

26808831 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

26808831 is a deficient number, since it is larger than the sum of its proper divisors (21848193).

26808831 is a wasteful number, since it uses less digits than its factorization.

26808831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 36.

The square root of 26808831 is about 5177.7245002028. The cubic root of 26808831 is about 299.2902890251.

It can be divided in two parts, 2680 and 8831, that added together give a palindrome (11511).

The spelling of 26808831 in words is "twenty-six million, eight hundred eight thousand, eight hundred thirty-one".