28430383 has 4 divisors (see below), whose sum is σ = 28455408. Its totient is φ = 28405360.

The previous prime is 28430371. The next prime is 28430399. The reversal of 28430383 is 38303482.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28430383 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 a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28430333) 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, 10723 + ... + 13108.

It is an arithmetic number, because the mean of its divisors is an integer number (7113852).

Almost surely, 2^28430383 is an apocalyptic number.

28430383 is a deficient number, since it is larger than the sum of its proper divisors (25025).

28430383 is a wasteful number, since it uses less digits than its factorization.

28430383 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25024.

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 28430383 is about 5332.0149099566. The cubic root of 28430383 is about 305.2068220074.

The spelling of 28430383 in words is "twenty-eight million, four hundred thirty thousand, three hundred eighty-three".