28425713 has 4 divisors (see below), whose sum is σ = 29405940. Its totient is φ = 27445488.

The previous prime is 28425673. The next prime is 28425739. The reversal of 28425713 is 31752482.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18515809 + 9909904 = 4303^2 + 3148^2 .

It is a cyclic number.

It is not a de Polignac number, because 28425713 - 2¹⁰ = 28424689 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28425713.

It is not an unprimeable number, because it can be changed into a prime (28425113) 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, 490070 + ... + 490127.

It is an arithmetic number, because the mean of its divisors is an integer number (7351485).

Almost surely, 2^28425713 is an apocalyptic number.

It is an amenable number.

28425713 is a deficient number, since it is larger than the sum of its proper divisors (980227).

28425713 is an equidigital number, since it uses as much as digits as its factorization.

28425713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 980226.

The product of its digits is 13440, while the sum is 32.

The square root of 28425713 is about 5331.5769712159. The cubic root of 28425713 is about 305.1901099110.

The spelling of 28425713 in words is "twenty-eight million, four hundred twenty-five thousand, seven hundred thirteen".