26980080 has 80 divisors (see below), whose sum is σ = 84756480. Its totient is φ = 7098624.

The previous prime is 26980073. The next prime is 26980097. The reversal of 26980080 is 8008962.

It is a tau number, because it is divible by the number of its divisors (80).

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, 18249 + ... + 19671.

It is an arithmetic number, because the mean of its divisors is an integer number (1059456).

Almost surely, 2^26980080 is an apocalyptic number.

26980080 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 26980080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42378240).

26980080 is an abundant number, since it is smaller than the sum of its proper divisors (57776400).

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

26980080 is a wasteful number, since it uses less digits than its factorization.

26980080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1518 (or 1512 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 26980080 is about 5194.2352661388. The cubic root of 26980080 is about 299.9262040709.

The spelling of 26980080 in words is "twenty-six million, nine hundred eighty thousand, eighty".