9791872 has 32 divisors (see below), whose sum is σ = 19651320. Its totient is φ = 4859904.

The previous prime is 9791863. The next prime is 9791911. The reversal of 9791872 is 2781979.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28888 + ... + 29224.

Almost surely, 2^9791872 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 9791872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9825660).

9791872 is an abundant number, since it is smaller than the sum of its proper divisors (9859448).

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

9791872 is a wasteful number, since it uses less digits than its factorization.

9791872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 578 (or 566 counting only the distinct ones).

The product of its digits is 63504, while the sum is 43.

The square root of 9791872 is about 3129.1967020307. The cubic root of 9791872 is about 213.9383174483.

The spelling of 9791872 in words is "nine million, seven hundred ninety-one thousand, eight hundred seventy-two".