28850249520 has 300 divisors, whose sum is σ = 102007994880. Its totient is φ = 7557090048.

The previous prime is 28850249459. The next prime is 28850249569. The reversal of 28850249520 is 2594205882.

28850249520 is a `hidden beast` number, since 2 + 8 + 85 + 0 + 2 + 49 + 520 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 22556241 + ... + 22557519.

Almost surely, 2^28850249520 is an apocalyptic number.

28850249520 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 28850249520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51003997440).

28850249520 is an abundant number, since it is smaller than the sum of its proper divisors (73157745360).

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

28850249520 is a wasteful number, since it uses less digits than its factorization.

28850249520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1422 (or 1348 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 45.

The spelling of 28850249520 in words is "twenty-eight billion, eight hundred fifty million, two hundred forty-nine thousand, five hundred twenty".