26417980 has 36 divisors (see below), whose sum is σ = 58567320. Its totient is φ = 10008288.

The previous prime is 26417957. The next prime is 26418013. The reversal of 26417980 is 8971462.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 5391 + ... + 9049.

It is an arithmetic number, because the mean of its divisors is an integer number (1626870).

Almost surely, 2^26417980 is an apocalyptic number.

26417980 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 26417980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29283660).

26417980 is an abundant number, since it is smaller than the sum of its proper divisors (32149340).

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

26417980 is a wasteful number, since it uses less digits than its factorization.

26417980 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3706 (or 3685 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 26417980 is about 5139.8424100355. The cubic root of 26417980 is about 297.8286930380.

The spelling of 26417980 in words is "twenty-six million, four hundred seventeen thousand, nine hundred eighty".