28078703244 has 48 divisors (see below), whose sum is σ = 72812930400. Its totient is φ = 9357473088.

The previous prime is 28078703243. The next prime is 28078703281. The reversal of 28078703244 is 44230787082.

It is a super-2 number, since 2×28078703244² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28078703244.

It is not an unprimeable number, because it can be changed into a prime (28078703243) 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, 500062 + ... + 553370.

It is an arithmetic number, because the mean of its divisors is an integer number (1516936050).

Almost surely, 2^28078703244 is an apocalyptic number.

It is an amenable number.

28078703244 is an abundant number, since it is smaller than the sum of its proper divisors (44734227156).

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

28078703244 is a wasteful number, since it uses less digits than its factorization.

28078703244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58199 (or 58191 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 45.

The spelling of 28078703244 in words is "twenty-eight billion, seventy-eight million, seven hundred three thousand, two hundred forty-four".