1186878028 has 72 divisors (see below), whose sum is σ = 2507617280. Its totient is φ = 481001760.

The previous prime is 1186878013. The next prime is 1186878061. The reversal of 1186878028 is 8208786811.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1917103 + ... + 1917721.

Almost surely, 2^1186878028 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 1186878028, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1253808640).

1186878028 is an abundant number, since it is smaller than the sum of its proper divisors (1320739252).

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

1186878028 is a wasteful number, since it uses less digits than its factorization.

1186878028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 344064, while the sum is 49.

The square root of 1186878028 is about 34451.0961799476. The cubic root of 1186878028 is about 1058.7709821153.

The spelling of 1186878028 in words is "one billion, one hundred eighty-six million, eight hundred seventy-eight thousand, twenty-eight".