28430733 has 8 divisors (see below), whose sum is σ = 38159296. Its totient is φ = 18828000.

The previous prime is 28430693. The next prime is 28430741. The reversal of 28430733 is 33703482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28430733 - 2¹² = 28426637 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 28430733.

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 7 ways as a sum of consecutive naturals, for example, 30928 + ... + 31833.

It is an arithmetic number, because the mean of its divisors is an integer number (4769912).

Almost surely, 2^28430733 is an apocalyptic number.

It is an amenable number.

28430733 is a deficient number, since it is larger than the sum of its proper divisors (9728563).

28430733 is a wasteful number, since it uses less digits than its factorization.

28430733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62915.

The product of its (nonzero) digits is 12096, while the sum is 30.

The square root of 28430733 is about 5332.0477304690. The cubic root of 28430733 is about 305.2080744463.

The spelling of 28430733 in words is "twenty-eight million, four hundred thirty thousand, seven hundred thirty-three".