1440331152 has 40 divisors (see below), whose sum is σ = 4007076864. Its totient is φ = 443178624.

The previous prime is 1440331147. The next prime is 1440331163. The reversal of 1440331152 is 2511330441.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

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, 1153488 + ... + 1154735.

Almost surely, 2^1440331152 is an apocalyptic number.

1440331152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1440331152 is an abundant number, since it is smaller than the sum of its proper divisors (2566745712).

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

1440331152 is a wasteful number, since it uses less digits than its factorization.

1440331152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308247 (or 2308241 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1440331152 is about 37951.6949819109. The cubic root of 1440331152 is about 1129.3297907901.

Adding to 1440331152 its reverse (2511330441), we get a palindrome (3951661593).

The spelling of 1440331152 in words is "one billion, four hundred forty million, three hundred thirty-one thousand, one hundred fifty-two".