28507903080 has 32 divisors (see below), whose sum is σ = 85523709600. Its totient is φ = 7602107456.

The previous prime is 28507903049. The next prime is 28507903103. The reversal of 28507903080 is 8030970582.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118782810 + ... + 118783049.

It is an arithmetic number, because the mean of its divisors is an integer number (2672615925).

Almost surely, 2^28507903080 is an apocalyptic number.

28507903080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28507903080 is an abundant number, since it is smaller than the sum of its proper divisors (57015806520).

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

28507903080 is a wasteful number, since it uses less digits than its factorization.

28507903080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237565873 (or 237565869 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The spelling of 28507903080 in words is "twenty-eight billion, five hundred seven million, nine hundred three thousand, eighty".