1132638 has 24 divisors (see below), whose sum is σ = 2455128. Its totient is φ = 348192.

The previous prime is 1132633. The next prime is 1132639. The reversal of 1132638 is 8362311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1132633) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 456 + ... + 1572.

It is an arithmetic number, because the mean of its divisors is an integer number (102297).

2^1132638 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1132638, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1227564).

1132638 is an abundant number, since it is smaller than the sum of its proper divisors (1322490).

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

1132638 is a wasteful number, since it uses less digits than its factorization.

1132638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148 (or 1135 counting only the distinct ones).

The product of its digits is 864, while the sum is 24.

The square root of 1132638 is about 1064.2546687706. The cubic root of 1132638 is about 104.2390335180.

Adding to 1132638 its reverse (8362311), we get a palindrome (9494949).

It can be divided in two parts, 1132 and 638, that added together give a triangular number (1770 = T₅₉).

The spelling of 1132638 in words is "one million, one hundred thirty-two thousand, six hundred thirty-eight".