26991360 has 288 divisors, whose sum is σ = 105960960. Its totient is φ = 6451200.

The previous prime is 26991353. The next prime is 26991383. The reversal of 26991360 is 6319962.

It is a tau number, because it is divible by the number of its divisors (288).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 380125 + ... + 380195.

It is an arithmetic number, because the mean of its divisors is an integer number (367920).

Almost surely, 2^26991360 is an apocalyptic number.

26991360 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 26991360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52980480).

26991360 is an abundant number, since it is smaller than the sum of its proper divisors (78969600).

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

26991360 is a wasteful number, since it uses less digits than its factorization.

26991360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 92 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 26991360 is about 5195.3209717976. The cubic root of 26991360 is about 299.9679965861.

The spelling of 26991360 in words is "twenty-six million, nine hundred ninety-one thousand, three hundred sixty".