26413440 has 64 divisors (see below), whose sum is σ = 84198960. Its totient is φ = 7043072.

The previous prime is 26413417. The next prime is 26413441. The reversal of 26413440 is 4431462.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 26413440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26413441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4959 + ... + 8798.

Almost surely, 2^26413440 is an apocalyptic number.

26413440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26413440 is an abundant number, since it is smaller than the sum of its proper divisors (57785520).

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

26413440 is a wasteful number, since it uses less digits than its factorization.

26413440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13779 (or 13767 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 26413440 is about 5139.4007432774. The cubic root of 26413440 is about 297.8116311767.

The spelling of 26413440 in words is "twenty-six million, four hundred thirteen thousand, four hundred forty".