8273021 has 4 divisors (see below), whose sum is σ = 8474844. Its totient is φ = 8071200.

The previous prime is 8272997. The next prime is 8273047. The reversal of 8273021 is 1203728.

8273021 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 511225 + 7761796 = 715^2 + 2786^2 .

It is a cyclic number.

It is not a de Polignac number, because 8273021 - 2²² = 4078717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8273051) 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, 100850 + ... + 100931.

It is an arithmetic number, because the mean of its divisors is an integer number (2118711).

Almost surely, 2^8273021 is an apocalyptic number.

It is an amenable number.

8273021 is a deficient number, since it is larger than the sum of its proper divisors (201823).

8273021 is a wasteful number, since it uses less digits than its factorization.

8273021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201822.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 8273021 is about 2876.2859732648. The cubic root of 8273021 is about 202.2497727204.

Adding to 8273021 its reverse (1203728), we get a palindrome (9476749).

The spelling of 8273021 in words is "eight million, two hundred seventy-three thousand, twenty-one".