1081332 has 54 divisors (see below), whose sum is σ = 3184818. Its totient is φ = 308448.

The previous prime is 1081331. The next prime is 1081337. The reversal of 1081332 is 2331801.

It can be written as a sum of positive squares in only one way, i.e., 571536 + 509796 = 756^2 + 714^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1458 + ... + 2070.

2^1081332 is an apocalyptic number.

1081332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1081332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1592409).

1081332 is an abundant number, since it is smaller than the sum of its proper divisors (2103486).

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

1081332 is a wasteful number, since it uses less digits than its factorization.

1081332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 637 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1081332 is about 1039.8711458638. The cubic root of 1081332 is about 102.6407188787.

The spelling of 1081332 in words is "one million, eighty-one thousand, three hundred thirty-two".