1440362252 has 18 divisors (see below), whose sum is σ = 2932166412. Its totient is φ = 617298024.

The previous prime is 1440362251. The next prime is 1440362293. The reversal of 1440362252 is 2522630441.

It is not an unprimeable number, because it can be changed into a prime (1440362251) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3674198 + ... + 3674589.

It is an arithmetic number, because the mean of its divisors is an integer number (162898134).

Almost surely, 2^1440362252 is an apocalyptic number.

It is an amenable number.

1440362252 is an abundant number, since it is smaller than the sum of its proper divisors (1491804160).

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

1440362252 is a wasteful number, since it uses less digits than its factorization.

1440362252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7348805 (or 7348796 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 1440362252 is about 37952.1047110697. The cubic root of 1440362252 is about 1129.3379189912.

Adding to 1440362252 its reverse (2522630441), we get a palindrome (3962992693).

The spelling of 1440362252 in words is "one billion, four hundred forty million, three hundred sixty-two thousand, two hundred fifty-two".