8821512 has 96 divisors (see below), whose sum is σ = 28529280. Its totient is φ = 2407680.

The previous prime is 8821511. The next prime is 8821517. The reversal of 8821512 is 2151288.

It is a super-2 number, since 2×8821512² = 155638147932288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8821511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11212 + ... + 11972.

It is an arithmetic number, because the mean of its divisors is an integer number (297180).

Almost surely, 2^8821512 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8821512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14264640).

8821512 is an abundant number, since it is smaller than the sum of its proper divisors (19707768).

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

8821512 is a wasteful number, since it uses less digits than its factorization.

8821512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803 (or 796 counting only the distinct ones).

The product of its digits is 1280, while the sum is 27.

The square root of 8821512 is about 2970.1030285160. The cubic root of 8821512 is about 206.6241165725.

The spelling of 8821512 in words is "eight million, eight hundred twenty-one thousand, five hundred twelve".