1440342016 has 56 divisors (see below), whose sum is σ = 2898611424. Its totient is φ = 715653120.

The previous prime is 1440341989. The next prime is 1440342053. The reversal of 1440342016 is 6102430441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1580601 + ... + 1581511.

Almost surely, 2^1440342016 is an apocalyptic number.

1440342016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1440342016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1449305712).

1440342016 is an abundant number, since it is smaller than the sum of its proper divisors (1458269408).

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

1440342016 is an frugal number, since it uses more digits than its factorization.

1440342016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1130 (or 1106 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 1440342016 is about 37951.8381109532. The cubic root of 1440342016 is about 1129.3326301853.

Adding to 1440342016 its reverse (6102430441), we get a palindrome (7542772457).

The spelling of 1440342016 in words is "one billion, four hundred forty million, three hundred forty-two thousand, sixteen".