26086221 has 72 divisors (see below), whose sum is σ = 48182784. Its totient is φ = 13296960.

The previous prime is 26086219. The next prime is 26086231. The reversal of 26086221 is 12268062.

It is not a de Polignac number, because 26086221 - 2¹ = 26086219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26086231) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 705015 + ... + 705051.

Almost surely, 2^26086221 is an apocalyptic number.

26086221 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

26086221 is a deficient number, since it is larger than the sum of its proper divisors (22096563).

26086221 is a wasteful number, since it uses less digits than its factorization.

26086221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 26086221 is about 5107.4671805113. The cubic root of 26086221 is about 296.5767190735.

The spelling of 26086221 in words is "twenty-six million, eighty-six thousand, two hundred twenty-one".