26980440 has 64 divisors (see below), whose sum is σ = 83743200. Its totient is φ = 6945792.

The previous prime is 26980391. The next prime is 26980441. The reversal of 26980440 is 4408962.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26980441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 397 + ... + 7356.

Almost surely, 2^26980440 is an apocalyptic number.

26980440 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 26980440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41871600).

26980440 is an abundant number, since it is smaller than the sum of its proper divisors (56762760).

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

26980440 is a wasteful number, since it uses less digits than its factorization.

26980440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7796 (or 7792 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 26980440 is about 5194.2699198251. The cubic root of 26980440 is about 299.9275380545.

The spelling of 26980440 in words is "twenty-six million, nine hundred eighty thousand, four hundred forty".