26236221 has 16 divisors (see below), whose sum is σ = 38594880. Its totient is φ = 15720320.

The previous prime is 26236211. The next prime is 26236237. The reversal of 26236221 is 12263262.

It is not a de Polignac number, because 26236221 - 2⁶ = 26236157 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26236191 and 26236200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26236211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1530 + ... + 7403.

It is an arithmetic number, because the mean of its divisors is an integer number (2412180).

Almost surely, 2^26236221 is an apocalyptic number.

It is an amenable number.

26236221 is a deficient number, since it is larger than the sum of its proper divisors (12358659).

26236221 is a wasteful number, since it uses less digits than its factorization.

26236221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9036.

The product of its digits is 1728, while the sum is 24.

The square root of 26236221 is about 5122.1305137609. The cubic root of 26236221 is about 297.1440877111.

Adding to 26236221 its reverse (12263262), we get a palindrome (38499483).

The spelling of 26236221 in words is "twenty-six million, two hundred thirty-six thousand, two hundred twenty-one".