5423509728 has 864 divisors, whose sum is σ = 21457747584. Its totient is φ = 1281982464.

The previous prime is 5423509709. The next prime is 5423509759. The reversal of 5423509728 is 8279053245.

5423509728 is a `hidden beast` number, since 54 + 23 + 509 + 72 + 8 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 115393801 + ... + 115393847.

It is an arithmetic number, because the mean of its divisors is an integer number (24835356).

Almost surely, 2^5423509728 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 5423509728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10728873792).

5423509728 is an abundant number, since it is smaller than the sum of its proper divisors (16034237856).

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

5423509728 is a wasteful number, since it uses less digits than its factorization.

5423509728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 5423509728 is about 73644.4819928825. The cubic root of 5423509728 is about 1756.9529889063.

The spelling of 5423509728 in words is "five billion, four hundred twenty-three million, five hundred nine thousand, seven hundred twenty-eight".