14728756440 has 32 divisors (see below), whose sum is σ = 44186269680. Its totient is φ = 3927668352.

The previous prime is 14728756423. The next prime is 14728756453. The reversal of 14728756440 is 4465782741.

It is a self number, because there is not a number n which added to its sum of digits gives 14728756440.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61369699 + ... + 61369938.

Almost surely, 2^14728756440 is an apocalyptic number.

14728756440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

14728756440 is an abundant number, since it is smaller than the sum of its proper divisors (29457513240).

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

14728756440 is a wasteful number, since it uses less digits than its factorization.

14728756440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122739651 (or 122739647 counting only the distinct ones).

The product of its (nonzero) digits is 1505280, while the sum is 48.

The spelling of 14728756440 in words is "fourteen billion, seven hundred twenty-eight million, seven hundred fifty-six thousand, four hundred forty".