8221276 has 12 divisors (see below), whose sum is σ = 16442608. Its totient is φ = 3523392.

The previous prime is 8221273. The next prime is 8221277. The reversal of 8221276 is 6721228.

8221276 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 293617 = 8221276 / (8 + 2 + 2 + 1 + 2 + 7 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8221273) 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, 146781 + ... + 146836.

Almost surely, 2^8221276 is an apocalyptic number.

It is an amenable number.

8221276 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8221276 is a wasteful number, since it uses less digits than its factorization.

8221276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 293628 (or 293626 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 8221276 is about 2867.2767567851. The cubic root of 8221276 is about 201.8272221247.

The spelling of 8221276 in words is "eight million, two hundred twenty-one thousand, two hundred seventy-six".