1440728480 has 48 divisors (see below), whose sum is σ = 3405991680. Its totient is φ = 575907072.

The previous prime is 1440728477. The next prime is 1440728489. The reversal of 1440728480 is 848270441.

It is a happy number.

It is a super-2 number, since 2×1440728480² = 4151397106166220800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1440728489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460361 + ... + 463479.

It is an arithmetic number, because the mean of its divisors is an integer number (70958160).

Almost surely, 2^1440728480 is an apocalyptic number.

1440728480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1440728480 is an abundant number, since it is smaller than the sum of its proper divisors (1965263200).

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

1440728480 is a wasteful number, since it uses less digits than its factorization.

1440728480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6021 (or 6013 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 38.

The square root of 1440728480 is about 37956.9292751666. The cubic root of 1440728480 is about 1129.4336264236.

The spelling of 1440728480 in words is "one billion, four hundred forty million, seven hundred twenty-eight thousand, four hundred eighty".