26298381 has 16 divisors (see below), whose sum is σ = 35944128. Its totient is φ = 17097600.

The previous prime is 26298359. The next prime is 26298397. The reversal of 26298381 is 18389262.

It is a happy number.

It is not a de Polignac number, because 26298381 - 2⁶ = 26298317 is a prime.

It is a super-2 number, since 2×26298381² = 1383209686442322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26298581) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23425 + ... + 24521.

It is an arithmetic number, because the mean of its divisors is an integer number (2246508).

Almost surely, 2^26298381 is an apocalyptic number.

It is an amenable number.

26298381 is a deficient number, since it is larger than the sum of its proper divisors (9645747).

26298381 is a wasteful number, since it uses less digits than its factorization.

26298381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292.

The product of its digits is 41472, while the sum is 39.

The square root of 26298381 is about 5128.1947115920. The cubic root of 26298381 is about 297.3785715396.

The spelling of 26298381 in words is "twenty-six million, two hundred ninety-eight thousand, three hundred eighty-one".