1187178828 has 96 divisors (see below), whose sum is σ = 3137799168. Its totient is φ = 346214400.

The previous prime is 1187178827. The next prime is 1187178847. The reversal of 1187178828 is 8288717811.

It is not an unprimeable number, because it can be changed into a prime (1187178827) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 376876 + ... + 380012.

It is an arithmetic number, because the mean of its divisors is an integer number (32685408).

Almost surely, 2^1187178828 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 1187178828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1568899584).

1187178828 is an abundant number, since it is smaller than the sum of its proper divisors (1950620340).

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

1187178828 is a wasteful number, since it uses less digits than its factorization.

1187178828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3263 (or 3261 counting only the distinct ones).

The product of its digits is 401408, while the sum is 51.

The square root of 1187178828 is about 34455.4615119287. The cubic root of 1187178828 is about 1058.8604188288.

The spelling of 1187178828 in words is "one billion, one hundred eighty-seven million, one hundred seventy-eight thousand, eight hundred twenty-eight".