1440072 has 64 divisors (see below), whose sum is σ = 4104000. Its totient is φ = 467712.

The previous prime is 1440037. The next prime is 1440079. The reversal of 1440072 is 2700441.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1440079) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 12688 + ... + 12800.

It is an arithmetic number, because the mean of its divisors is an integer number (64125).

2^1440072 is an apocalyptic number.

1440072 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 1440072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2052000).

1440072 is an abundant number, since it is smaller than the sum of its proper divisors (2663928).

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

1440072 is a wasteful number, since it uses less digits than its factorization.

1440072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 187 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 1440072 is about 1200.0299996250. The cubic root of 1440072 is about 112.9262055064.

The spelling of 1440072 in words is "one million, four hundred forty thousand, seventy-two".