8121284 has 12 divisors (see below), whose sum is σ = 14960400. Its totient is φ = 3846888.

The previous prime is 8121283. The next prime is 8121293. The reversal of 8121284 is 4821218.

It is not an unprimeable number, because it can be changed into a prime (8121283) 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, 53354 + ... + 53505.

It is an arithmetic number, because the mean of its divisors is an integer number (1246700).

Almost surely, 2^8121284 is an apocalyptic number.

It is an amenable number.

8121284 is a deficient number, since it is larger than the sum of its proper divisors (6839116).

8121284 is a wasteful number, since it uses less digits than its factorization.

8121284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106882 (or 106880 counting only the distinct ones).

The product of its digits is 1024, while the sum is 26.

The square root of 8121284 is about 2849.7866586817. The cubic root of 8121284 is about 201.0056350161.

The spelling of 8121284 in words is "eight million, one hundred twenty-one thousand, two hundred eighty-four".