26981808 has 80 divisors (see below), whose sum is σ = 80399616. Its totient is φ = 7637760.

The previous prime is 26981797. The next prime is 26981827. The reversal of 26981808 is 80818962.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 26981808.

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, 43710 + ... + 44322.

Almost surely, 2^26981808 is an apocalyptic number.

26981808 is a gapful number since it is divisible by the number (28) 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 26981808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40199808).

26981808 is an abundant number, since it is smaller than the sum of its proper divisors (53417808).

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

26981808 is a wasteful number, since it uses less digits than its factorization.

26981808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 26981808 is about 5194.4016017247. The cubic root of 26981808 is about 299.9326070840.

The spelling of 26981808 in words is "twenty-six million, nine hundred eighty-one thousand, eight hundred eight".