1440732 has 48 divisors (see below), whose sum is σ = 3628800. Its totient is φ = 443520.

The previous prime is 1440731. The next prime is 1440737. The reversal of 1440732 is 2370441.

It is a junction number, because it is equal to n+sod(n) for n = 1440699 and 1440708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440731) 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, 16144 + ... + 16232.

It is an arithmetic number, because the mean of its divisors is an integer number (75600).

2^1440732 is an apocalyptic number.

1440732 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 1440732, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1814400).

1440732 is an abundant number, since it is smaller than the sum of its proper divisors (2188068).

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

1440732 is a wasteful number, since it uses less digits than its factorization.

1440732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 1440732 is about 1200.3049612494. The cubic root of 1440732 is about 112.9434546237.

Adding to 1440732 its sum of digits (21), we get a triangular number (1440753 = T₁₆₉₇).

The spelling of 1440732 in words is "one million, four hundred forty thousand, seven hundred thirty-two".