8381212 has 12 divisors (see below), whose sum is σ = 16762480. Its totient is φ = 3591936.

The previous prime is 8381209. The next prime is 8381227. The reversal of 8381212 is 2121838.

8381212 is an admirable number.

It is an alternating number because its digits alternate between even and odd.

It is a zygodrome in base 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149637 + ... + 149692.

Almost surely, 2^8381212 is an apocalyptic number.

It is an amenable number.

8381212 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.

8381212 is a wasteful number, since it uses less digits than its factorization.

8381212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299340 (or 299338 counting only the distinct ones).

The product of its digits is 768, while the sum is 25.

The square root of 8381212 is about 2895.0322968837. The cubic root of 8381212 is about 203.1276022389.

The spelling of 8381212 in words is "eight million, three hundred eighty-one thousand, two hundred twelve".