26828586720 has 1440 divisors, whose sum is σ = 117949154400. Its totient is φ = 5685313536.

The previous prime is 26828586713. The next prime is 26828586787. The reversal of 26828586720 is 2768582862.

26828586720 is a `hidden beast` number, since 268 + 285 + 86 + 7 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (1440).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 239 ways as a sum of consecutive naturals, for example, 925123666 + ... + 925123694.

It is an arithmetic number, because the mean of its divisors is an integer number (81909135).

Almost surely, 2^26828586720 is an apocalyptic number.

26828586720 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 26828586720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58974577200).

26828586720 is an abundant number, since it is smaller than the sum of its proper divisors (91120567680).

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

26828586720 is a wasteful number, since it uses less digits than its factorization.

26828586720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122 (or 88 counting only the distinct ones).

The product of its (nonzero) digits is 5160960, while the sum is 54.

The spelling of 26828586720 in words is "twenty-six billion, eight hundred twenty-eight million, five hundred eighty-six thousand, seven hundred twenty".