28365180620 has 24 divisors (see below), whose sum is σ = 68076433824. Its totient is φ = 9725204736.

The previous prime is 28365180589. The next prime is 28365180689. The reversal of 28365180620 is 2608156382.

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, 101304077 + ... + 101304356.

It is an arithmetic number, because the mean of its divisors is an integer number (2836518076).

Almost surely, 2^28365180620 is an apocalyptic number.

28365180620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28365180620 is an abundant number, since it is smaller than the sum of its proper divisors (39711253204).

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

28365180620 is a wasteful number, since it uses less digits than its factorization.

28365180620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202608449 (or 202608447 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 41.

The spelling of 28365180620 in words is "twenty-eight billion, three hundred sixty-five million, one hundred eighty thousand, six hundred twenty".