26280891 has 24 divisors (see below), whose sum is σ = 46723040. Its totient is φ = 13862016.

The previous prime is 26280811. The next prime is 26280893. The reversal of 26280891 is 19808262.

It is not a de Polignac number, because 26280891 - 2⁷ = 26280763 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (26280893) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15226 + ... + 16863.

Almost surely, 2^26280891 is an apocalyptic number.

26280891 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

26280891 is a deficient number, since it is larger than the sum of its proper divisors (20442149).

26280891 is a wasteful number, since it uses less digits than its factorization.

26280891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32115 (or 32112 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 26280891 is about 5126.4891495057. The cubic root of 26280891 is about 297.3126320601.

The spelling of 26280891 in words is "twenty-six million, two hundred eighty thousand, eight hundred ninety-one".