26166138 has 16 divisors (see below), whose sum is σ = 52872960. Its totient is φ = 8631936.

The previous prime is 26166137. The next prime is 26166181. The reversal of 26166138 is 83166162.

It is a junction number, because it is equal to n+sod(n) for n = 26166099 and 26166108.

It is not an unprimeable number, because it can be changed into a prime (26166137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21898 + ... + 23061.

It is an arithmetic number, because the mean of its divisors is an integer number (3304560).

Almost surely, 2^26166138 is an apocalyptic number.

26166138 is an abundant number, since it is smaller than the sum of its proper divisors (26706822).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26166138 is a wasteful number, since it uses less digits than its factorization.

26166138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45061.

The product of its digits is 10368, while the sum is 33.

The square root of 26166138 is about 5115.2847428076. The cubic root of 26166138 is about 296.8792716357.

The spelling of 26166138 in words is "twenty-six million, one hundred sixty-six thousand, one hundred thirty-eight".