26532891 has 24 divisors (see below), whose sum is σ = 47783424. Its totient is φ = 13782960.

The previous prime is 26532887. The next prime is 26532893. The reversal of 26532891 is 19823562.

It is not a de Polignac number, because 26532891 - 2² = 26532887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26532893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18451 + ... + 19836.

It is an arithmetic number, because the mean of its divisors is an integer number (1990976).

Almost surely, 2^26532891 is an apocalyptic number.

26532891 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

26532891 is a deficient number, since it is larger than the sum of its proper divisors (21250533).

26532891 is a wasteful number, since it uses less digits than its factorization.

26532891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38311 (or 38308 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 26532891 is about 5151.0087361603. The cubic root of 26532891 is about 298.2598929395.

The spelling of 26532891 in words is "twenty-six million, five hundred thirty-two thousand, eight hundred ninety-one".