28239300612 has 36 divisors (see below), whose sum is σ = 71571055920. Its totient is φ = 9388258992.

The previous prime is 28239300599. The next prime is 28239300613. The reversal of 28239300612 is 21600393282.

28239300612 is a `hidden beast` number, since 2 + 8 + 2 + 3 + 9 + 30 + 0 + 612 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (28239300613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1021218 + ... + 1048505.

Almost surely, 2^28239300612 is an apocalyptic number.

It is an amenable number.

28239300612 is an abundant number, since it is smaller than the sum of its proper divisors (43331755308).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28239300612 is a wasteful number, since it uses less digits than its factorization.

28239300612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2070112 (or 2070107 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

Adding to 28239300612 its reverse (21600393282), we get a palindrome (49839693894).

The spelling of 28239300612 in words is "twenty-eight billion, two hundred thirty-nine million, three hundred thousand, six hundred twelve".