26981064 has 144 divisors (see below), whose sum is σ = 85066800. Its totient is φ = 7698240.

The previous prime is 26981063. The next prime is 26981089. The reversal of 26981064 is 46018962.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (26981063) 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 35 ways as a sum of consecutive naturals, for example, 165447 + ... + 165609.

Almost surely, 2^26981064 is an apocalyptic number.

26981064 is a gapful number since it is divisible by the number (24) 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 26981064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42533400).

26981064 is an abundant number, since it is smaller than the sum of its proper divisors (58085736).

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

26981064 is a wasteful number, since it uses less digits than its factorization.

26981064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 26981064 is about 5194.3299856671. The cubic root of 26981064 is about 299.9298502647.

The spelling of 26981064 in words is "twenty-six million, nine hundred eighty-one thousand, sixty-four".