14428728 has 48 divisors (see below), whose sum is σ = 40781520. Its totient is φ = 4599936.

The previous prime is 14428727. The next prime is 14428753. The reversal of 14428728 is 82782441.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 14428692 and 14428701.

It is a congruent number.

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

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 11 ways as a sum of consecutive naturals, for example, 2701 + ... + 6012.

It is an arithmetic number, because the mean of its divisors is an integer number (849615).

Almost surely, 2^14428728 is an apocalyptic number.

14428728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

14428728 is an abundant number, since it is smaller than the sum of its proper divisors (26352792).

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

14428728 is a wasteful number, since it uses less digits than its factorization.

14428728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8748 (or 8741 counting only the distinct ones).

The product of its digits is 28672, while the sum is 36.

The square root of 14428728 is about 3798.5165525505. The cubic root of 14428728 is about 243.4497589270.

The spelling of 14428728 in words is "fourteen million, four hundred twenty-eight thousand, seven hundred twenty-eight".