26579891 has 16 divisors (see below), whose sum is σ = 31024224. Its totient is φ = 22546944.

The previous prime is 26579851. The next prime is 26579899. The reversal of 26579891 is 19897562.

It is a cyclic number.

It is not a de Polignac number, because 26579891 - 2⁶ = 26579827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26579899) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8105 + ... + 10901.

It is an arithmetic number, because the mean of its divisors is an integer number (1939014).

Almost surely, 2^26579891 is an apocalyptic number.

26579891 is a deficient number, since it is larger than the sum of its proper divisors (4444333).

26579891 is a wasteful number, since it uses less digits than its factorization.

26579891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2870.

The product of its digits is 272160, while the sum is 47.

The square root of 26579891 is about 5155.5689307777. The cubic root of 26579891 is about 298.4359002189.

The spelling of 26579891 in words is "twenty-six million, five hundred seventy-nine thousand, eight hundred ninety-one".