14428720 has 80 divisors (see below), whose sum is σ = 35435232. Its totient is φ = 5457920.

The previous prime is 14428717. The next prime is 14428721. The reversal of 14428720 is 2782441.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (14428721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173799 + ... + 173881.

Almost surely, 2^14428720 is an apocalyptic number.

14428720 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 14428720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (17717616).

14428720 is an abundant number, since it is smaller than the sum of its proper divisors (21006512).

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

14428720 is a wasteful number, since it uses less digits than its factorization.

14428720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 14428720 is about 3798.5154995077. The cubic root of 14428720 is about 243.4497139335.

The spelling of 14428720 in words is "fourteen million, four hundred twenty-eight thousand, seven hundred twenty".