1189656 has 96 divisors (see below), whose sum is σ = 3669120. Its totient is φ = 345600.

The previous prime is 1189651. The next prime is 1189673. The reversal of 1189656 is 6569811.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (12960) is a multiple of the sum of its prime divisors (90).

It is a self number, because there is not a number n which added to its sum of digits gives 1189656.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189651) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28996 + ... + 29036.

It is an arithmetic number, because the mean of its divisors is an integer number (38220).

2^1189656 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 1189656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1834560).

1189656 is an abundant number, since it is smaller than the sum of its proper divisors (2479464).

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

1189656 is a wasteful number, since it uses less digits than its factorization.

1189656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97 (or 90 counting only the distinct ones).

The product of its digits is 12960, while the sum is 36.

The square root of 1189656 is about 1090.7135279256. The cubic root of 1189656 is about 105.9596381280.

The spelling of 1189656 in words is "one million, one hundred eighty-nine thousand, six hundred fifty-six".