26491887 has 24 divisors (see below), whose sum is σ = 40593840. Its totient is φ = 17074800.

The previous prime is 26491859. The next prime is 26491903. The reversal of 26491887 is 78819462.

It is not a de Polignac number, because 26491887 - 2⁸ = 26491631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26491807) 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, 25437 + ... + 26457.

It is an arithmetic number, because the mean of its divisors is an integer number (1691410).

Almost surely, 2^26491887 is an apocalyptic number.

26491887 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

26491887 is a deficient number, since it is larger than the sum of its proper divisors (14101953).

26491887 is a wasteful number, since it uses less digits than its factorization.

26491887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092 (or 1055 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 26491887 is about 5147.0270059521. The cubic root of 26491887 is about 298.1061698482.

The spelling of 26491887 in words is "twenty-six million, four hundred ninety-one thousand, eight hundred eighty-seven".