8781045 has 48 divisors (see below), whose sum is σ = 17619840. Its totient is φ = 3701376.

The previous prime is 8781043. The next prime is 8781049. The reversal of 8781045 is 5401878.

It is a happy number.

It is not a de Polignac number, because 8781045 - 2¹ = 8781043 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8780997 and 8781015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8781043) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9096 + ... + 10014.

It is an arithmetic number, because the mean of its divisors is an integer number (367080).

Almost surely, 2^8781045 is an apocalyptic number.

It is an amenable number.

8781045 is an abundant number, since it is smaller than the sum of its proper divisors (8838795).

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

8781045 is a wasteful number, since it uses less digits than its factorization.

8781045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954 (or 947 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The square root of 8781045 is about 2963.2828079682. The cubic root of 8781045 is about 206.3076826724.

The spelling of 8781045 in words is "eight million, seven hundred eighty-one thousand, forty-five".