26981800 has 24 divisors (see below), whose sum is σ = 62733150. Its totient is φ = 10792640.

The previous prime is 26981797. The next prime is 26981827. The reversal of 26981800 is 818962.

It can be written as a sum of positive squares in 3 ways, for example, as 15570916 + 11410884 = 3946^2 + 3378^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 67255 + ... + 67654.

Almost surely, 2^26981800 is an apocalyptic number.

26981800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

26981800 is an abundant number, since it is smaller than the sum of its proper divisors (35751350).

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

26981800 is a wasteful number, since it uses less digits than its factorization.

26981800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134925 (or 134916 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 26981800 is about 5194.4008316648. The cubic root of 26981800 is about 299.9325774411.

The spelling of 26981800 in words is "twenty-six million, nine hundred eighty-one thousand, eight hundred".