26488989 has 12 divisors (see below), whose sum is σ = 39152256. Its totient is φ = 17248392.

The previous prime is 26488951. The next prime is 26488991. The reversal of 26488989 is 98988462.

It is a de Polignac number, because none of the positive numbers 2^k-26488989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26488289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 33837 + ... + 34610.

It is an arithmetic number, because the mean of its divisors is an integer number (3262688).

Almost surely, 2^26488989 is an apocalyptic number.

It is an amenable number.

26488989 is a deficient number, since it is larger than the sum of its proper divisors (12663267).

26488989 is a wasteful number, since it uses less digits than its factorization.

26488989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68496 (or 68493 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 26488989 is about 5146.7454765123. The cubic root of 26488989 is about 298.0952993103.

It can be divided in two parts, 264 and 88989, that added together give a triangular number (89253 = T₄₂₂).

The spelling of 26488989 in words is "twenty-six million, four hundred eighty-eight thousand, nine hundred eighty-nine".