9915372 has 54 divisors (see below), whose sum is σ = 26252044. Its totient is φ = 3272400.

The previous prime is 9915349. The next prime is 9915377. The reversal of 9915372 is 2735199.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a tau number, because it is divible by the number of its divisors (54).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (9915377) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 98122 + ... + 98222.

Almost surely, 2^9915372 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 9915372, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13126022).

9915372 is an abundant number, since it is smaller than the sum of its proper divisors (16336672).

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

9915372 is a wasteful number, since it uses less digits than its factorization.

9915372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221 (or 106 counting only the distinct ones).

The product of its digits is 17010, while the sum is 36.

The square root of 9915372 is about 3148.8683681602. The cubic root of 9915372 is about 214.8339948069.

It can be divided in two parts, 99153 and 72, that added together give a square (99225 = 315²).

The spelling of 9915372 in words is "nine million, nine hundred fifteen thousand, three hundred seventy-two".