26081378 has 4 divisors (see below), whose sum is σ = 39122070. Its totient is φ = 13040688.

The previous prime is 26081369. The next prime is 26081387. The reversal of 26081378 is 87318062.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (26081369) and next prime (26081387).

It can be written as a sum of positive squares in only one way, i.e., 24930049 + 1151329 = 4993^2 + 1073^2 .

It is a Curzon number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6520343 + ... + 6520346.

Almost surely, 2^26081378 is an apocalyptic number.

26081378 is a deficient number, since it is larger than the sum of its proper divisors (13040692).

26081378 is a wasteful number, since it uses less digits than its factorization.

26081378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13040691.

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 26081378 is about 5106.9930487519. The cubic root of 26081378 is about 296.5583644289.

The spelling of 26081378 in words is "twenty-six million, eighty-one thousand, three hundred seventy-eight".