4321440072 has 96 divisors (see below), whose sum is σ = 12215548800. Its totient is φ = 1431203904.

The previous prime is 4321440061. The next prime is 4321440089. The reversal of 4321440072 is 2700441234.

4321440072 is a `hidden beast` number, since 43 + 214 + 400 + 7 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 298129 + ... + 312287.

It is an arithmetic number, because the mean of its divisors is an integer number (127245300).

Almost surely, 2^4321440072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4321440072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6107774400).

4321440072 is an abundant number, since it is smaller than the sum of its proper divisors (7894108728).

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

4321440072 is a wasteful number, since it uses less digits than its factorization.

4321440072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14337 (or 14321 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 27.

The square root of 4321440072 is about 65737.6609866825. The cubic root of 4321440072 is about 1628.8315200744.

The spelling of 4321440072 in words is "four billion, three hundred twenty-one million, four hundred forty thousand, seventy-two".