28344870930 has 32 divisors (see below), whose sum is σ = 68092492608. Its totient is φ = 7551432000.

The previous prime is 28344870923. The next prime is 28344870937. The reversal of 28344870930 is 3907844382.

It is an interprime number because it is at equal distance from previous prime (28344870923) and next prime (28344870937).

It is a self number, because there is not a number n which added to its sum of digits gives 28344870930.

It is not an unprimeable number, because it can be changed into a prime (28344870937) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 417961 + ... + 481020.

It is an arithmetic number, because the mean of its divisors is an integer number (2127890394).

Almost surely, 2^28344870930 is an apocalyptic number.

28344870930 is an abundant number, since it is smaller than the sum of its proper divisors (39747621678).

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

28344870930 is a wasteful number, since it uses less digits than its factorization.

28344870930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900042.

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 28344870930 in words is "twenty-eight billion, three hundred forty-four million, eight hundred seventy thousand, nine hundred thirty".