26930688 has 80 divisors (see below), whose sum is σ = 72919440. Its totient is φ = 8830976.

The previous prime is 26930639. The next prime is 26930693. The reversal of 26930688 is 88603962.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136606 + ... + 136802.

It is an arithmetic number, because the mean of its divisors is an integer number (911493).

Almost surely, 2^26930688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26930688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36459720).

26930688 is an abundant number, since it is smaller than the sum of its proper divisors (45988752).

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

26930688 is an equidigital number, since it uses as much as digits as its factorization.

26930688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 26930688 is about 5189.4785865249. The cubic root of 26930688 is about 299.7430689064.

The spelling of 26930688 in words is "twenty-six million, nine hundred thirty thousand, six hundred eighty-eight".