26926981 has 4 divisors (see below), whose sum is σ = 27188512. Its totient is φ = 26665452.

The previous prime is 26926973. The next prime is 26927023. The reversal of 26926981 is 18962962.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 26926981 - 2³ = 26926973 is a prime.

It is a super-2 number, since 2×26926981² = 1450124611548722, 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 (26926961) 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, 130611 + ... + 130816.

It is an arithmetic number, because the mean of its divisors is an integer number (6797128).

Almost surely, 2^26926981 is an apocalyptic number.

It is an amenable number.

26926981 is a deficient number, since it is larger than the sum of its proper divisors (261531).

26926981 is a wasteful number, since it uses less digits than its factorization.

26926981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261530.

The product of its digits is 93312, while the sum is 43.

The square root of 26926981 is about 5189.1214092561. The cubic root of 26926981 is about 299.7293150983.

The spelling of 26926981 in words is "twenty-six million, nine hundred twenty-six thousand, nine hundred eighty-one".