26604240 has 80 divisors (see below), whose sum is σ = 88827648. Its totient is φ = 6547968.

The previous prime is 26604211. The next prime is 26604247. The reversal of 26604240 is 4240662.

It is a tau number, because it is divible by the number of its divisors (80).

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 26604240.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26604247) 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, 1144 + ... + 7383.

Almost surely, 2^26604240 is an apocalyptic number.

26604240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26604240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44413824).

26604240 is an abundant number, since it is smaller than the sum of its proper divisors (62223408).

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

26604240 is a wasteful number, since it uses less digits than its factorization.

26604240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8556 (or 8550 counting only the distinct ones).

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

The square root of 26604240 is about 5157.9298172813. The cubic root of 26604240 is about 298.5270016454.

The spelling of 26604240 in words is "twenty-six million, six hundred four thousand, two hundred forty".