28424713 has 4 divisors (see below), whose sum is σ = 28550160. Its totient is φ = 28299268.

The previous prime is 28424699. The next prime is 28424717. The reversal of 28424713 is 31742482.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28424713 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28424717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 62383 + ... + 62836.

It is an arithmetic number, because the mean of its divisors is an integer number (7137540).

Almost surely, 2^28424713 is an apocalyptic number.

It is an amenable number.

28424713 is a deficient number, since it is larger than the sum of its proper divisors (125447).

28424713 is a wasteful number, since it uses less digits than its factorization.

28424713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125446.

The product of its digits is 10752, while the sum is 31.

The square root of 28424713 is about 5331.4831895074. The cubic root of 28424713 is about 305.1865310657.

The spelling of 28424713 in words is "twenty-eight million, four hundred twenty-four thousand, seven hundred thirteen".