1444140 has 72 divisors (see below), whose sum is σ = 4481568. Its totient is φ = 376320.

The previous prime is 1444111. The next prime is 1444181. The reversal of 1444140 is 414441.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 12724 + ... + 12836.

It is an arithmetic number, because the mean of its divisors is an integer number (62244).

2^1444140 is an apocalyptic number.

1444140 is a gapful number since it is divisible by the number (10) 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 1444140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2240784).

1444140 is an abundant number, since it is smaller than the sum of its proper divisors (3037428).

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

1444140 is a wasteful number, since it uses less digits than its factorization.

1444140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 1444140 is about 1201.7237619353. The cubic root of 1444140 is about 113.0324390644.

Adding to 1444140 its reverse (414441), we get a palindrome (1858581).

The spelling of 1444140 in words is "one million, four hundred forty-four thousand, one hundred forty".