26886090 has 128 divisors (see below), whose sum is σ = 81948672. Its totient is φ = 5483520.

The previous prime is 26886089. The next prime is 26886109. The reversal of 26886090 is 9068862.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 237874 + ... + 237986.

It is an arithmetic number, because the mean of its divisors is an integer number (640224).

Almost surely, 2^26886090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26886090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40974336).

26886090 is an abundant number, since it is smaller than the sum of its proper divisors (55062582).

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

26886090 is a wasteful number, since it uses less digits than its factorization.

26886090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 26886090 is about 5185.1798425898. The cubic root of 26886090 is about 299.5775164158.

It can be divided in two parts, 2688 and 6090, that added together give a palindrome (8778).

The spelling of 26886090 in words is "twenty-six million, eight hundred eighty-six thousand, ninety".