1189888 has 48 divisors (see below), whose sum is σ = 2751840. Its totient is φ = 503808.

The previous prime is 1189879. The next prime is 1189891. The reversal of 1189888 is 8889811.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14295 + ... + 14377.

It is an arithmetic number, because the mean of its divisors is an integer number (57330).

2^1189888 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 1189888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1375920).

1189888 is an abundant number, since it is smaller than the sum of its proper divisors (1561952).

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

1189888 is an frugal number, since it uses more digits than its factorization.

1189888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112 (or 92 counting only the distinct ones).

The product of its digits is 36864, while the sum is 43.

The square root of 1189888 is about 1090.8198751398. The cubic root of 1189888 is about 105.9665255639.

The spelling of 1189888 in words is "one million, one hundred eighty-nine thousand, eight hundred eighty-eight".