26321138 has 4 divisors (see below), whose sum is σ = 39481710. Its totient is φ = 13160568.

The previous prime is 26321129. The next prime is 26321143. The reversal of 26321138 is 83112362.

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

It can be written as a sum of positive squares in only one way, i.e., 14876449 + 11444689 = 3857^2 + 3383^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6580283 + ... + 6580286.

Almost surely, 2^26321138 is an apocalyptic number.

26321138 is a deficient number, since it is larger than the sum of its proper divisors (13160572).

26321138 is a wasteful number, since it uses less digits than its factorization.

26321138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13160571.

The product of its digits is 1728, while the sum is 26.

The square root of 26321138 is about 5130.4130438007. The cubic root of 26321138 is about 297.4643245124.

The spelling of 26321138 in words is "twenty-six million, three hundred twenty-one thousand, one hundred thirty-eight".