1440352 has 48 divisors (see below), whose sum is σ = 3144960. Its totient is φ = 646272.

The previous prime is 1440349. The next prime is 1440379. The reversal of 1440352 is 2530441.

It is a super-2 number, since 2×1440352² = 4149227767808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13933 + ... + 14035.

It is an arithmetic number, because the mean of its divisors is an integer number (65520).

2^1440352 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 1440352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1572480).

1440352 is an abundant number, since it is smaller than the sum of its proper divisors (1704608).

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

1440352 is a wasteful number, since it uses less digits than its factorization.

1440352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155 (or 147 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 1440352 is about 1200.1466577048. The cubic root of 1440352 is about 112.9335239573.

Adding to 1440352 its reverse (2530441), we get a palindrome (3970793).

The spelling of 1440352 in words is "one million, four hundred forty thousand, three hundred fifty-two".