1189238028 has 24 divisors (see below), whose sum is σ = 3027151680. Its totient is φ = 360375120.

The previous prime is 1189237999. The next prime is 1189238047. The reversal of 1189238028 is 8208329811.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4504558 + ... + 4504821.

It is an arithmetic number, because the mean of its divisors is an integer number (126131320).

Almost surely, 2^1189238028 is an apocalyptic number.

It is an amenable number.

1189238028 is an abundant number, since it is smaller than the sum of its proper divisors (1837913652).

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

1189238028 is a wasteful number, since it uses less digits than its factorization.

1189238028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9009397 (or 9009395 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The square root of 1189238028 is about 34485.3306204247. The cubic root of 1189238028 is about 1059.4722743963.

The spelling of 1189238028 in words is "one billion, one hundred eighty-nine million, two hundred thirty-eight thousand, twenty-eight".