1440336252 has 24 divisors (see below), whose sum is σ = 3410947456. Its totient is φ = 472945968.

The previous prime is 1440336221. The next prime is 1440336263. The reversal of 1440336252 is 2526330441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 894928 + ... + 896535.

Almost surely, 2^1440336252 is an apocalyptic number.

1440336252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1440336252 is an abundant number, since it is smaller than the sum of its proper divisors (1970611204).

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

1440336252 is a wasteful number, since it uses less digits than its factorization.

1440336252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791537 (or 1791535 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 1440336252 is about 37951.7621725263. The cubic root of 1440336252 is about 1129.3311237185.

Adding to 1440336252 its reverse (2526330441), we get a palindrome (3966666693).

The spelling of 1440336252 in words is "one billion, four hundred forty million, three hundred thirty-six thousand, two hundred fifty-two".