14315644728 has 256 divisors, whose sum is σ = 51734937600. Its totient is φ = 3556586880.

The previous prime is 14315644723. The next prime is 14315644741. The reversal of 14315644728 is 82744651341.

14315644728 is a `hidden beast` number, since 1 + 43 + 1 + 564 + 47 + 2 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (14315644723) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 363825 + ... + 401247.

It is an arithmetic number, because the mean of its divisors is an integer number (202089600).

Almost surely, 2^14315644728 is an apocalyptic number.

14315644728 is a gapful number since it is divisible by the number (18) 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 14315644728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25867468800).

14315644728 is an abundant number, since it is smaller than the sum of its proper divisors (37419292872).

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

14315644728 is a wasteful number, since it uses less digits than its factorization.

14315644728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37479 (or 37469 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The spelling of 14315644728 in words is "fourteen billion, three hundred fifteen million, six hundred forty-four thousand, seven hundred twenty-eight".