8728188 has 48 divisors (see below), whose sum is σ = 24084480. Its totient is φ = 2407104.

The previous prime is 8728169. The next prime is 8728193. The reversal of 8728188 is 8818278.

It is a happy number.

8728188 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (42) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 645 + ... + 4227.

It is an arithmetic number, because the mean of its divisors is an integer number (501760).

Almost surely, 2^8728188 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 8728188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12042240).

8728188 is an abundant number, since it is smaller than the sum of its proper divisors (15356292).

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

8728188 is a wasteful number, since it uses less digits than its factorization.

8728188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3626 (or 3624 counting only the distinct ones).

The product of its digits is 57344, while the sum is 42.

The square root of 8728188 is about 2954.3506900840. The cubic root of 8728188 is about 205.8928968494.

It can be divided in two parts, 87 and 28188, that multiplied together give a square (2452356 = 1566²).

The spelling of 8728188 in words is "eight million, seven hundred twenty-eight thousand, one hundred eighty-eight".