14428686840 has 128 divisors (see below), whose sum is σ = 43582536000. Its totient is φ = 3821404160.

The previous prime is 14428686821. The next prime is 14428686863. The reversal of 14428686840 is 4868682441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15139804 + ... + 15140756.

Almost surely, 2^14428686840 is an apocalyptic number.

14428686840 is a gapful number since it is divisible by the number (10) 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 14428686840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21791268000).

14428686840 is an abundant number, since it is smaller than the sum of its proper divisors (29153849160).

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

14428686840 is a wasteful number, since it uses less digits than its factorization.

14428686840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697 (or 1693 counting only the distinct ones).

The product of its (nonzero) digits is 2359296, while the sum is 51.

The spelling of 14428686840 in words is "fourteen billion, four hundred twenty-eight million, six hundred eighty-six thousand, eight hundred forty".