28396506933500 has 192 divisors, whose sum is σ = 65857456304640. Its totient is φ = 10666131840000.

The previous prime is 28396506933449. The next prime is 28396506933523. The reversal of 28396506933500 is 533960569382.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 28396506933500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1098880580 + ... + 1098906420.

It is an arithmetic number, because the mean of its divisors is an integer number (343007584920).

Almost surely, 2^{28396506933500} is an apocalyptic number.

28396506933500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28396506933500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32928728152320).

28396506933500 is an abundant number, since it is smaller than the sum of its proper divisors (37460949371140).

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

28396506933500 is a wasteful number, since it uses less digits than its factorization.

28396506933500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26893 (or 26881 counting only the distinct ones).

The product of its (nonzero) digits is 31492800, while the sum is 59.

The spelling of 28396506933500 in words is "twenty-eight trillion, three hundred ninety-six billion, five hundred six million, nine hundred thirty-three thousand, five hundred".