26981983 has 8 divisors (see below), whose sum is σ = 31136768. Its totient is φ = 22902264.

The previous prime is 26981951. The next prime is 26981987. The reversal of 26981983 is 38918962.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 26981983 - 2⁵ = 26981951 is a prime.

It is a super-2 number, since 2×26981983² = 1456054813224578, which contains 22 as substring.

It is a Duffinian number.

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 (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17991 + ... + 19432.

It is an arithmetic number, because the mean of its divisors is an integer number (3892096).

Almost surely, 2^26981983 is an apocalyptic number.

26981983 is a deficient number, since it is larger than the sum of its proper divisors (4154785).

26981983 is a wasteful number, since it uses less digits than its factorization.

26981983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37533.

The product of its digits is 186624, while the sum is 46.

The square root of 26981983 is about 5194.4184467561. The cubic root of 26981983 is about 299.9332555221.

The spelling of 26981983 in words is "twenty-six million, nine hundred eighty-one thousand, nine hundred eighty-three".