9973872 has 30 divisors (see below), whose sum is σ = 27913392. Its totient is φ = 3324576.

The previous prime is 9973871. The next prime is 9973877. The reversal of 9973872 is 2783799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9973871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34488 + ... + 34775.

Almost surely, 2^9973872 is an apocalyptic number.

It is an amenable number.

9973872 is an abundant number, since it is smaller than the sum of its proper divisors (17939520).

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

9973872 is a wasteful number, since it uses less digits than its factorization.

9973872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69277 (or 69268 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 9973872 is about 3158.1437586025. The cubic root of 9973872 is about 215.2556684477.

The spelling of 9973872 in words is "nine million, nine hundred seventy-three thousand, eight hundred seventy-two".