8785428 has 48 divisors (see below), whose sum is σ = 21552384. Its totient is φ = 2782080.

The previous prime is 8785423. The next prime is 8785433. The reversal of 8785428 is 8245878.

It is an interprime number because it is at equal distance from previous prime (8785423) and next prime (8785433).

Its product of digits (143360) is a multiple of the sum of its prime factors (512).

It is a self number, because there is not a number n which added to its sum of digits gives 8785428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8785421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20658 + ... + 21078.

It is an arithmetic number, because the mean of its divisors is an integer number (449008).

Almost surely, 2^8785428 is an apocalyptic number.

It is an amenable number.

8785428 is an abundant number, since it is smaller than the sum of its proper divisors (12766956).

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

8785428 is a wasteful number, since it uses less digits than its factorization.

8785428 is an evil number, because the sum of its binary digits is even.

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

The product of its digits is 143360, while the sum is 42.

The square root of 8785428 is about 2964.0222671228. The cubic root of 8785428 is about 206.3420026638.

The spelling of 8785428 in words is "eight million, seven hundred eighty-five thousand, four hundred twenty-eight".