1187328 has 40 divisors (see below), whose sum is σ = 3167208. Its totient is φ = 395264.

The previous prime is 1187321. The next prime is 1187339. The reversal of 1187328 is 8237811.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 1187295 and 1187304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1187321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1150 + ... + 1922.

2^1187328 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 1187328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1583604).

1187328 is an abundant number, since it is smaller than the sum of its proper divisors (1979880).

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

1187328 is an frugal number, since it uses more digits than its factorization.

1187328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794 (or 778 counting only the distinct ones).

The product of its digits is 2688, while the sum is 30.

The square root of 1187328 is about 1089.6458140148. The cubic root of 1187328 is about 105.8904766461.

The spelling of 1187328 in words is "one million, one hundred eighty-seven thousand, three hundred twenty-eight".