9873124820 has 96 divisors (see below), whose sum is σ = 23145091200. Its totient is φ = 3512646144.

The previous prime is 9873124817. The next prime is 9873124837. The reversal of 9873124820 is 284213789.

It is a super-2 number, since 2×9873124820² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4967867 + ... + 4969853.

It is an arithmetic number, because the mean of its divisors is an integer number (241094700).

Almost surely, 2^9873124820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9873124820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11572545600).

9873124820 is an abundant number, since it is smaller than the sum of its proper divisors (13271966380).

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

9873124820 is a wasteful number, since it uses less digits than its factorization.

9873124820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2697 (or 2695 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 44.

The square root of 9873124820 is about 99363.5990692769. The cubic root of 9873124820 is about 2145.2844057916.

The spelling of 9873124820 in words is "nine billion, eight hundred seventy-three million, one hundred twenty-four thousand, eight hundred twenty".