1440213000 has 64 divisors (see below), whose sum is σ = 4493473920. Its totient is φ = 384056000.

The previous prime is 1440212999. The next prime is 1440213001. The reversal of 1440213000 is 3120441.

It is an interprime number because it is at equal distance from previous prime (1440212999) and next prime (1440213001).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (1440213001) 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, 237036 + ... + 243035.

It is an arithmetic number, because the mean of its divisors is an integer number (70210530).

Almost surely, 2^1440213000 is an apocalyptic number.

1440213000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440213000 is an abundant number, since it is smaller than the sum of its proper divisors (3053260920).

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

1440213000 is a wasteful number, since it uses less digits than its factorization.

1440213000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480095 (or 480081 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 1440213000 is about 37950.1383396688. The cubic root of 1440213000 is about 1129.2989098773.

Adding to 1440213000 its reverse (3120441), we get a palindrome (1443333441).

The spelling of 1440213000 in words is "one billion, four hundred forty million, two hundred thirteen thousand".