26440218 has 48 divisors (see below), whose sum is σ = 65834496. Its totient is φ = 7512480.

The previous prime is 26440217. The next prime is 26440243. The reversal of 26440218 is 81204462.

26440218 is a `hidden beast` number, since 2 + 6 + 440 + 218 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 26440191 and 26440200.

It is not an unprimeable number, because it can be changed into a prime (26440217) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27628 + ... + 28568.

It is an arithmetic number, because the mean of its divisors is an integer number (1371552).

Almost surely, 2^26440218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26440218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32917248).

26440218 is an abundant number, since it is smaller than the sum of its proper divisors (39394278).

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

26440218 is a wasteful number, since it uses less digits than its factorization.

26440218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179 (or 1176 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 26440218 is about 5142.0052508725. The cubic root of 26440218 is about 297.9122378681.

The spelling of 26440218 in words is "twenty-six million, four hundred forty thousand, two hundred eighteen".