26808980 has 48 divisors (see below), whose sum is σ = 61798464. Its totient is φ = 9688320.

The previous prime is 26808973. The next prime is 26808989. The reversal of 26808980 is 8980862.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26808989) 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, 50999 + ... + 51521.

It is an arithmetic number, because the mean of its divisors is an integer number (1287468).

Almost surely, 2^26808980 is an apocalyptic number.

26808980 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 26808980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30899232).

26808980 is an abundant number, since it is smaller than the sum of its proper divisors (34989484).

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

26808980 is a wasteful number, since it uses less digits than its factorization.

26808980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776 (or 774 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 26808980 is about 5177.7388887428. The cubic root of 26808980 is about 299.2908434962.

The spelling of 26808980 in words is "twenty-six million, eight hundred eight thousand, nine hundred eighty".