8781872 has 40 divisors (see below), whose sum is σ = 19030032. Its totient is φ = 3891200.

The previous prime is 8781869. The next prime is 8781889. The reversal of 8781872 is 2781878.

It is a Harshad number since it is a multiple of its sum of digits (41).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6608 + ... + 7824.

Almost surely, 2^8781872 is an apocalyptic number.

8781872 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8781872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9515016).

8781872 is an abundant number, since it is smaller than the sum of its proper divisors (10248160).

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

8781872 is a wasteful number, since it uses less digits than its factorization.

8781872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1277 (or 1271 counting only the distinct ones).

The product of its digits is 50176, while the sum is 41.

The square root of 8781872 is about 2963.4223458697. The cubic root of 8781872 is about 206.3141591642.

The spelling of 8781872 in words is "eight million, seven hundred eighty-one thousand, eight hundred seventy-two".