1440252 has 36 divisors (see below), whose sum is σ = 3972696. Its totient is φ = 436320.

The previous prime is 1440247. The next prime is 1440253. The reversal of 1440252 is 2520441.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440253) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1423 + ... + 2214.

2^1440252 is an apocalyptic number.

1440252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1440252 is an abundant number, since it is smaller than the sum of its proper divisors (2532444).

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

1440252 is a wasteful number, since it uses less digits than its factorization.

1440252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3658 (or 3653 counting only the distinct ones).

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

The square root of 1440252 is about 1200.1049954067. The cubic root of 1440252 is about 112.9309103337.

Adding to 1440252 its reverse (2520441), we get a palindrome (3960693).

The spelling of 1440252 in words is "one million, four hundred forty thousand, two hundred fifty-two".