26973381 has 4 divisors (see below), whose sum is σ = 35964512. Its totient is φ = 17982252.

The previous prime is 26973377. The next prime is 26973383. The reversal of 26973381 is 18337962.

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 not a de Polignac number, because 26973381 - 2² = 26973377 is a prime.

It is a super-2 number, since 2×26973381² = 1455126565142322, 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 (26973383) 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 3 ways as a sum of consecutive naturals, for example, 4495561 + ... + 4495566.

It is an arithmetic number, because the mean of its divisors is an integer number (8991128).

Almost surely, 2^26973381 is an apocalyptic number.

It is an amenable number.

26973381 is a deficient number, since it is larger than the sum of its proper divisors (8991131).

26973381 is an equidigital number, since it uses as much as digits as its factorization.

26973381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8991130.

The product of its digits is 54432, while the sum is 39.

The square root of 26973381 is about 5193.5903766085. The cubic root of 26973381 is about 299.9013786941.

The spelling of 26973381 in words is "twenty-six million, nine hundred seventy-three thousand, three hundred eighty-one".