26282021 has 4 divisors (see below), whose sum is σ = 26322444. Its totient is φ = 26241600.

The previous prime is 26281979. The next prime is 26282027. The reversal of 26282021 is 12028262.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12028262 = 2 ⋅6014131.

It can be written as a sum of positive squares in 2 ways, for example, as 10797796 + 15484225 = 3286^2 + 3935^2 .

It is a cyclic number.

It is not a de Polignac number, because 26282021 - 2¹⁴ = 26265637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26282027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19220 + ... + 20541.

It is an arithmetic number, because the mean of its divisors is an integer number (6580611).

Almost surely, 2^26282021 is an apocalyptic number.

It is an amenable number.

26282021 is a deficient number, since it is larger than the sum of its proper divisors (40423).

26282021 is an equidigital number, since it uses as much as digits as its factorization.

26282021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40422.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 26282021 is about 5126.5993601997. The cubic root of 26282021 is about 297.3168931848.

The spelling of 26282021 in words is "twenty-six million, two hundred eighty-two thousand, twenty-one".