9742870872 has 96 divisors (see below), whose sum is σ = 30289708800. Its totient is φ = 2771381952.

The previous prime is 9742870859. The next prime is 9742870889. The reversal of 9742870872 is 2780782479.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71829 + ... + 156987.

It is an arithmetic number, because the mean of its divisors is an integer number (315517800).

Almost surely, 2^9742870872 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 9742870872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15144854400).

9742870872 is an abundant number, since it is smaller than the sum of its proper divisors (20546837928).

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

9742870872 is a wasteful number, since it uses less digits than its factorization.

9742870872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85405 (or 85398 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 54.

The square root of 9742870872 is about 98705.9819463846. The cubic root of 9742870872 is about 2135.8085244766.

The spelling of 9742870872 in words is "nine billion, seven hundred forty-two million, eight hundred seventy thousand, eight hundred seventy-two".