1320732 has 48 divisors (see below), whose sum is σ = 3915520. Its totient is φ = 377136.

The previous prime is 1320731. The next prime is 1320749. The reversal of 1320732 is 2370231.

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 (1320731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118 + ... + 1629.

2^1320732 is an apocalyptic number.

1320732 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 1320732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1957760).

1320732 is an abundant number, since it is smaller than the sum of its proper divisors (2594788).

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

1320732 is a wasteful number, since it uses less digits than its factorization.

1320732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1767 (or 1759 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 18.

The square root of 1320732 is about 1149.2310472660. The cubic root of 1320732 is about 109.7164044652.

Adding to 1320732 its reverse (2370231), we get a palindrome (3690963).

The spelling of 1320732 in words is "one million, three hundred twenty thousand, seven hundred thirty-two".