1440450 has 96 divisors (see below), whose sum is σ = 4374720. Its totient is φ = 345600.

The previous prime is 1440449. The next prime is 1440469. The reversal of 1440450 is 540441.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14802 + ... + 14898.

It is an arithmetic number, because the mean of its divisors is an integer number (45570).

2^1440450 is an apocalyptic number.

1440450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1440450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2187360).

1440450 is an abundant number, since it is smaller than the sum of its proper divisors (2934270).

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

1440450 is a wasteful number, since it uses less digits than its factorization.

1440450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 118 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 1440450 is about 1200.1874853539. The cubic root of 1440450 is about 112.9360851910.

Adding to 1440450 its reverse (540441), we get a palindrome (1980891).

Subtracting from 1440450 its reverse (540441), we obtain a palindrome (900009).

The spelling of 1440450 in words is "one million, four hundred forty thousand, four hundred fifty".