26290138 has 16 divisors (see below), whose sum is σ = 45183744. Its totient is φ = 11238480.

The previous prime is 26290133. The next prime is 26290151. The reversal of 26290138 is 83109262.

It is not an unprimeable number, because it can be changed into a prime (26290133) 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 7 ways as a sum of consecutive naturals, for example, 3856 + ... + 8212.

It is an arithmetic number, because the mean of its divisors is an integer number (2823984).

Almost surely, 2^26290138 is an apocalyptic number.

26290138 is a deficient number, since it is larger than the sum of its proper divisors (18893606).

26290138 is a wasteful number, since it uses less digits than its factorization.

26290138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4797.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 26290138 is about 5127.3909544719. The cubic root of 26290138 is about 297.3474980460.

The spelling of 26290138 in words is "twenty-six million, two hundred ninety thousand, one hundred thirty-eight".