26426840 has 64 divisors (see below), whose sum is σ = 68700960. Its totient is φ = 9041920.

The previous prime is 26426833. The next prime is 26426861. The reversal of 26426840 is 4862462.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 26426797 and 26426806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5714 + ... + 9246.

Almost surely, 2^26426840 is an apocalyptic number.

26426840 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 26426840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34350480).

26426840 is an abundant number, since it is smaller than the sum of its proper divisors (42274120).

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

26426840 is a wasteful number, since it uses less digits than its factorization.

26426840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3572 (or 3568 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 26426840 is about 5140.7042319122. The cubic root of 26426840 is about 297.8619843454.

The spelling of 26426840 in words is "twenty-six million, four hundred twenty-six thousand, eight hundred forty".