26836821 has 12 divisors (see below), whose sum is σ = 42288480. Its totient is φ = 16264680.

The previous prime is 26836819. The next prime is 26836961. The reversal of 26836821 is 12863862.

It is not a de Polignac number, because 26836821 - 2¹ = 26836819 is a prime.

It is a super-2 number, since 2×26836821² = 1440429922772082, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26836021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135441 + ... + 135638.

It is an arithmetic number, because the mean of its divisors is an integer number (3524040).

Almost surely, 2^26836821 is an apocalyptic number.

It is an amenable number.

26836821 is a deficient number, since it is larger than the sum of its proper divisors (15451659).

26836821 is a wasteful number, since it uses less digits than its factorization.

26836821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271096 (or 271093 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 26836821 is about 5180.4267198755. The cubic root of 26836821 is about 299.3944116986.

The spelling of 26836821 in words is "twenty-six million, eight hundred thirty-six thousand, eight hundred twenty-one".