26398845 has 64 divisors (see below), whose sum is σ = 53049600. Its totient is φ = 12337920.

The previous prime is 26398829. The next prime is 26398849. The reversal of 26398845 is 54889362.

26398845 is a `hidden beast` number, since 2 + 639 + 8 + 8 + 4 + 5 = 666.

It is not a de Polignac number, because 26398845 - 2⁴ = 26398829 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 26398845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26398849) 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 63 ways as a sum of consecutive naturals, for example, 42759 + ... + 43371.

It is an arithmetic number, because the mean of its divisors is an integer number (828900).

Almost surely, 2^26398845 is an apocalyptic number.

It is an amenable number.

26398845 is an abundant number, since it is smaller than the sum of its proper divisors (26650755).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26398845 is a wasteful number, since it uses less digits than its factorization.

26398845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 661 counting only the distinct ones).

The product of its digits is 414720, while the sum is 45.

The square root of 26398845 is about 5137.9806344516. The cubic root of 26398845 is about 297.7567681779.

The spelling of 26398845 in words is "twenty-six million, three hundred ninety-eight thousand, eight hundred forty-five".