1191632 has 40 divisors (see below), whose sum is σ = 2640456. Its totient is φ = 516096.

The previous prime is 1191613. The next prime is 1191637. The reversal of 1191632 is 2361911.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 59536 + 1132096 = 244^2 + 1064^2 .

It is a nialpdrome in base 11.

It is a junction number, because it is equal to n+sod(n) for n = 1191598 and 1191607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191637) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3368 + ... + 3704.

2^1191632 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 1191632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1320228).

1191632 is an abundant number, since it is smaller than the sum of its proper divisors (1448824).

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

1191632 is a wasteful number, since it uses less digits than its factorization.

1191632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375 (or 369 counting only the distinct ones).

The product of its digits is 324, while the sum is 23.

The square root of 1191632 is about 1091.6189811468. The cubic root of 1191632 is about 106.0182714439.

The spelling of 1191632 in words is "one million, one hundred ninety-one thousand, six hundred thirty-two".