26097381 has 24 divisors (see below), whose sum is σ = 39386880. Its totient is φ = 16632000.

The previous prime is 26097377. The next prime is 26097391. The reversal of 26097381 is 18379062.

It is not a de Polignac number, because 26097381 - 2² = 26097377 is a prime.

It is a super-2 number, since 2×26097381² = 1362146590118322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26097301) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24306 + ... + 25356.

It is an arithmetic number, because the mean of its divisors is an integer number (1641120).

Almost surely, 2^26097381 is an apocalyptic number.

It is an amenable number.

26097381 is a deficient number, since it is larger than the sum of its proper divisors (13289499).

26097381 is a wasteful number, since it uses less digits than its factorization.

26097381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1177 (or 1174 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 26097381 is about 5108.5595817216. The cubic root of 26097381 is about 296.6190060764.

The spelling of 26097381 in words is "twenty-six million, ninety-seven thousand, three hundred eighty-one".