26981943 has 4 divisors (see below), whose sum is σ = 35975928. Its totient is φ = 17987960.

The previous prime is 26981909. The next prime is 26981951. The reversal of 26981943 is 34918962.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 26981943 - 2¹⁴ = 26965559 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26981895 and 26981904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26981993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4496988 + ... + 4496993.

It is an arithmetic number, because the mean of its divisors is an integer number (8993982).

Almost surely, 2^26981943 is an apocalyptic number.

26981943 is a deficient number, since it is larger than the sum of its proper divisors (8993985).

26981943 is an equidigital number, since it uses as much as digits as its factorization.

26981943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8993984.

The product of its digits is 93312, while the sum is 42.

The square root of 26981943 is about 5194.4145964680. The cubic root of 26981943 is about 299.9331073079.

The spelling of 26981943 in words is "twenty-six million, nine hundred eighty-one thousand, nine hundred forty-three".