26981888 has 40 divisors (see below), whose sum is σ = 54423600. Its totient is φ = 13363200.

The previous prime is 26981887. The next prime is 26981909. The reversal of 26981888 is 88818962.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26981887) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 77138 + ... + 77486.

It is an arithmetic number, because the mean of its divisors is an integer number (1360590).

Almost surely, 2^26981888 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 26981888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27211800).

26981888 is an abundant number, since it is smaller than the sum of its proper divisors (27441712).

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

26981888 is an equidigital number, since it uses as much as digits as its factorization.

26981888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518 (or 502 counting only the distinct ones).

The product of its digits is 442368, while the sum is 50.

The square root of 26981888 is about 5194.4093023173. The cubic root of 26981888 is about 299.9329035132.

The spelling of 26981888 in words is "twenty-six million, nine hundred eighty-one thousand, eight hundred eighty-eight".