8260021 has 8 divisors (see below), whose sum is σ = 10298304. Its totient is φ = 6436320.

The previous prime is 8260019. The next prime is 8260027. The reversal of 8260021 is 1200628.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8260021 - 2¹ = 8260019 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 (8260027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53560 + ... + 53713.

It is an arithmetic number, because the mean of its divisors is an integer number (1287288).

Almost surely, 2^8260021 is an apocalyptic number.

It is an amenable number.

8260021 is a deficient number, since it is larger than the sum of its proper divisors (2038283).

8260021 is a wasteful number, since it uses less digits than its factorization.

8260021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107291.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 8260021 is about 2874.0252260549. The cubic root of 8260021 is about 202.1437805875.

Adding to 8260021 its reverse (1200628), we get a palindrome (9460649).

It can be divided in two parts, 82600 and 21, that added together give a triangular number (82621 = T₄₀₆).

The spelling of 8260021 in words is "eight million, two hundred sixty thousand, twenty-one".