14428731 has 4 divisors (see below), whose sum is σ = 19238312. Its totient is φ = 9619152.

The previous prime is 14428727. The next prime is 14428753. The reversal of 14428731 is 13782441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13782441 = 3 ⋅4594147.

It is not a de Polignac number, because 14428731 - 2² = 14428727 is a prime.

It is a super-2 number, since 2×14428731² = 416376556540722, which contains 22 as substring.

It is a Duffinian 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 (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2404786 + ... + 2404791.

It is an arithmetic number, because the mean of its divisors is an integer number (4809578).

Almost surely, 2^14428731 is an apocalyptic number.

14428731 is a deficient number, since it is larger than the sum of its proper divisors (4809581).

14428731 is an equidigital number, since it uses as much as digits as its factorization.

14428731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4809580.

The product of its digits is 5376, while the sum is 30.

The square root of 14428731 is about 3798.5169474415. The cubic root of 14428731 is about 243.4497757996.

The spelling of 14428731 in words is "fourteen million, four hundred twenty-eight thousand, seven hundred thirty-one".