26555840 has 56 divisors (see below), whose sum is σ = 65300352. Its totient is φ = 10275840.

The previous prime is 26555833. The next prime is 26555843. The reversal of 26555840 is 4855562.

It is a self number, because there is not a number n which added to its sum of digits gives 26555840.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26555843) 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 7 ways as a sum of consecutive naturals, for example, 8582 + ... + 11258.

Almost surely, 2^26555840 is an apocalyptic number.

26555840 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 26555840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32650176).

26555840 is an abundant number, since it is smaller than the sum of its proper divisors (38744512).

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

26555840 is a wasteful number, since it uses less digits than its factorization.

26555840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2725 (or 2715 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 26555840 is about 5153.2358766119. The cubic root of 26555840 is about 298.3458591192.

The spelling of 26555840 in words is "twenty-six million, five hundred fifty-five thousand, eight hundred forty".