28290338750 has 80 divisors (see below), whose sum is σ = 54617016960. Its totient is φ = 10978704000.

The previous prime is 28290338737. The next prime is 28290338759. The reversal of 28290338750 is 5783309282.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 28290338695 and 28290338704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28290338759) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 22153112 + ... + 22154388.

It is an arithmetic number, because the mean of its divisors is an integer number (682712712).

Almost surely, 2^28290338750 is an apocalyptic number.

28290338750 is a deficient number, since it is larger than the sum of its proper divisors (26326678210).

28290338750 is a wasteful number, since it uses less digits than its factorization.

28290338750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815 (or 1800 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 28290338750 in words is "twenty-eight billion, two hundred ninety million, three hundred thirty-eight thousand, seven hundred fifty".