28103760500 has 24 divisors (see below), whose sum is σ = 61378614024. Its totient is φ = 11241504000.

The previous prime is 28103760439. The next prime is 28103760541. The reversal of 28103760500 is 506730182.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 641304976 + 27462455524 = 25324^2 + 165718^2 .

It is a congruent number.

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, 28103261 + ... + 28104260.

It is an arithmetic number, because the mean of its divisors is an integer number (2557442251).

Almost surely, 2^28103760500 is an apocalyptic number.

28103760500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28103760500 is an abundant number, since it is smaller than the sum of its proper divisors (33274853524).

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

28103760500 is a wasteful number, since it uses less digits than its factorization.

28103760500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56207540 (or 56207528 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 32.

The spelling of 28103760500 in words is "twenty-eight billion, one hundred three million, seven hundred sixty thousand, five hundred".