26639122 has 4 divisors (see below), whose sum is σ = 39958686. Its totient is φ = 13319560.

The previous prime is 26639111. The next prime is 26639143. The reversal of 26639122 is 22193662.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 22193662 = 2 ⋅11096831.

It can be written as a sum of positive squares in only one way, i.e., 21706281 + 4932841 = 4659^2 + 2221^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 6659779 + ... + 6659782.

Almost surely, 2^26639122 is an apocalyptic number.

26639122 is a deficient number, since it is larger than the sum of its proper divisors (13319564).

26639122 is a wasteful number, since it uses less digits than its factorization.

26639122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13319563.

The product of its digits is 7776, while the sum is 31.

The square root of 26639122 is about 5161.3101050024. The cubic root of 26639122 is about 298.6574153327.

The spelling of 26639122 in words is "twenty-six million, six hundred thirty-nine thousand, one hundred twenty-two".