28300230421 has 8 divisors (see below), whose sum is σ = 28554298200. Its totient is φ = 28046226432.

The previous prime is 28300230407. The next prime is 28300230473. The reversal of 28300230421 is 12403200382.

It can be written as a sum of positive squares in 4 ways, for example, as 414570321 + 27885660100 = 20361^2 + 166990^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 28300230421 - 2¹⁷ = 28300099349 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28300230521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1624071 + ... + 1641403.

It is an arithmetic number, because the mean of its divisors is an integer number (3569287275).

Almost surely, 2^28300230421 is an apocalyptic number.

It is an amenable number.

28300230421 is a deficient number, since it is larger than the sum of its proper divisors (254067779).

28300230421 is a wasteful number, since it uses less digits than its factorization.

28300230421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31895.

The product of its (nonzero) digits is 2304, while the sum is 25.

The spelling of 28300230421 in words is "twenty-eight billion, three hundred million, two hundred thirty thousand, four hundred twenty-one".