26489813 has 16 divisors (see below), whose sum is σ = 32368896. Its totient is φ = 21183360.

The previous prime is 26489809. The next prime is 26489821. The reversal of 26489813 is 31898462.

It is a cyclic number.

It is not a de Polignac number, because 26489813 - 2² = 26489809 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26489833) 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 15 ways as a sum of consecutive naturals, for example, 4595 + ... + 8607.

It is an arithmetic number, because the mean of its divisors is an integer number (2023056).

Almost surely, 2^26489813 is an apocalyptic number.

26489813 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

26489813 is a deficient number, since it is larger than the sum of its proper divisors (5879083).

26489813 is a wasteful number, since it uses less digits than its factorization.

26489813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4084.

The product of its digits is 82944, while the sum is 41.

The square root of 26489813 is about 5146.8255264775. The cubic root of 26489813 is about 298.0983902548.

The spelling of 26489813 in words is "twenty-six million, four hundred eighty-nine thousand, eight hundred thirteen".