9128497500 has 300 divisors, whose sum is σ = 30349941160. Its totient is φ = 2391120000.

The previous prime is 9128497487. The next prime is 9128497517. The reversal of 9128497500 is 57948219.

9128497500 is a `hidden beast` number, since 91 + 28 + 497 + 50 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (300).

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

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 99 ways as a sum of consecutive naturals, for example, 12352131 + ... + 12352869.

Almost surely, 2^9128497500 is an apocalyptic number.

9128497500 is a gapful number since it is divisible by the number (90) 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 9128497500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15174970580).

9128497500 is an abundant number, since it is smaller than the sum of its proper divisors (21221443660).

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

9128497500 is a wasteful number, since it uses less digits than its factorization.

9128497500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836 (or 810 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 45.

The square root of 9128497500 is about 95543.1708705546. The cubic root of 9128497500 is about 2089.9365456189.

The spelling of 9128497500 in words is "nine billion, one hundred twenty-eight million, four hundred ninety-seven thousand, five hundred".