28305639302 has 8 divisors (see below), whose sum is σ = 44956015416. Its totient is φ = 13320300832.

The previous prime is 28305639301. The next prime is 28305639311. The reversal of 28305639302 is 20393650382.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28305639302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28305639301) 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, 416259368 + ... + 416259435.

It is an arithmetic number, because the mean of its divisors is an integer number (5619501927).

Almost surely, 2^28305639302 is an apocalyptic number.

28305639302 is a deficient number, since it is larger than the sum of its proper divisors (16650376114).

28305639302 is a wasteful number, since it uses less digits than its factorization.

28305639302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832518822.

The product of its (nonzero) digits is 233280, while the sum is 41.

The spelling of 28305639302 in words is "twenty-eight billion, three hundred five million, six hundred thirty-nine thousand, three hundred two".