8781396 has 48 divisors (see below), whose sum is σ = 22259328. Its totient is φ = 2678400.

The previous prime is 8781379. The next prime is 8781397. The reversal of 8781396 is 6931878.

It is a super-2 number, since 2×8781396² = 154225831417632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8781397) 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 15 ways as a sum of consecutive naturals, for example, 28081 + ... + 28391.

It is an arithmetic number, because the mean of its divisors is an integer number (463736).

Almost surely, 2^8781396 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 8781396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11129664).

8781396 is an abundant number, since it is smaller than the sum of its proper divisors (13477932).

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

8781396 is a wasteful number, since it uses less digits than its factorization.

8781396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 510 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 8781396 is about 2963.3420322332. The cubic root of 8781396 is about 206.3104315112.

The spelling of 8781396 in words is "eight million, seven hundred eighty-one thousand, three hundred ninety-six".