28075313630 has 128 divisors (see below), whose sum is σ = 65269241856. Its totient is φ = 8450956800.

The previous prime is 28075313593. The next prime is 28075313633. The reversal of 28075313630 is 3631357082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28075313633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3784625 + ... + 3792035.

It is an arithmetic number, because the mean of its divisors is an integer number (509915952).

Almost surely, 2^28075313630 is an apocalyptic number.

28075313630 is an abundant number, since it is smaller than the sum of its proper divisors (37193928226).

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

28075313630 is a wasteful number, since it uses less digits than its factorization.

28075313630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7642.

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 28075313630 in words is "twenty-eight billion, seventy-five million, three hundred thirteen thousand, six hundred thirty".