28203101520 has 80 divisors (see below), whose sum is σ = 95377770432. Its totient is φ = 6837114880.

The previous prime is 28203101501. The next prime is 28203101581. The reversal of 28203101520 is 2510130282.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5338857 + ... + 5344136.

Almost surely, 2^28203101520 is an apocalyptic number.

28203101520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28203101520 is an abundant number, since it is smaller than the sum of its proper divisors (67174668912).

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

28203101520 is a wasteful number, since it uses less digits than its factorization.

28203101520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10683020 (or 10683014 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 24.

The spelling of 28203101520 in words is "twenty-eight billion, two hundred three million, one hundred one thousand, five hundred twenty".