26072381 has 2 divisors, whose sum is σ = 26072382. Its totient is φ = 26072380.

The previous prime is 26072353. The next prime is 26072411. The reversal of 26072381 is 18327062.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15405625 + 10666756 = 3925^2 + 3266^2 .

It is a cyclic number.

It is not a de Polignac number, because 26072381 - 2¹⁸ = 25810237 is a prime.

It is a super-2 number, since 2×26072381² = 1359538102018322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26072281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13036190 + 13036191.

It is an arithmetic number, because the mean of its divisors is an integer number (13036191).

Almost surely, 2^26072381 is an apocalyptic number.

It is an amenable number.

26072381 is a deficient number, since it is larger than the sum of its proper divisors (1).

26072381 is an equidigital number, since it uses as much as digits as its factorization.

26072381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 26072381 is about 5106.1121217615. The cubic root of 26072381 is about 296.5242603712.

The spelling of 26072381 in words is "twenty-six million, seventy-two thousand, three hundred eighty-one".