26811138 has 16 divisors (see below), whose sum is σ = 55471680. Its totient is φ = 8628816.

The previous prime is 26811131. The next prime is 26811139. The reversal of 26811138 is 83111862.

It is not an unprimeable number, because it can be changed into a prime (26811131) 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, 76870 + ... + 77217.

It is an arithmetic number, because the mean of its divisors is an integer number (3466980).

Almost surely, 2^26811138 is an apocalyptic number.

26811138 is an abundant number, since it is smaller than the sum of its proper divisors (28660542).

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

26811138 is a wasteful number, since it uses less digits than its factorization.

26811138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154121.

The product of its digits is 2304, while the sum is 30.

The square root of 26811138 is about 5177.9472766725. The cubic root of 26811138 is about 299.2988737944.

The spelling of 26811138 in words is "twenty-six million, eight hundred eleven thousand, one hundred thirty-eight".