26981984 has 24 divisors (see below), whose sum is σ = 54358920. Its totient is φ = 13176576.

The previous prime is 26981951. The next prime is 26981987. The reversal of 26981984 is 48918962.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26981987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8429 + ... + 11180.

It is an arithmetic number, because the mean of its divisors is an integer number (2264955).

Almost surely, 2^26981984 is an apocalyptic number.

It is an amenable number.

26981984 is an abundant number, since it is smaller than the sum of its proper divisors (27376936).

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

26981984 is a wasteful number, since it uses less digits than its factorization.

26981984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19662 (or 19654 counting only the distinct ones).

The product of its digits is 248832, while the sum is 47.

The square root of 26981984 is about 5194.4185430133. The cubic root of 26981984 is about 299.9332592274.

The spelling of 26981984 in words is "twenty-six million, nine hundred eighty-one thousand, nine hundred eighty-four".