9781152 has 48 divisors (see below), whose sum is σ = 25895520. Its totient is φ = 3232512.

The previous prime is 9781139. The next prime is 9781153. The reversal of 9781152 is 2511879.

9781152 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (9781153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12978 + ... + 13710.

It is an arithmetic number, because the mean of its divisors is an integer number (539490).

Almost surely, 2^9781152 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 9781152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12947760).

9781152 is an abundant number, since it is smaller than the sum of its proper divisors (16114368).

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

9781152 is a wasteful number, since it uses less digits than its factorization.

9781152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885 (or 877 counting only the distinct ones).

The product of its digits is 5040, while the sum is 33.

The square root of 9781152 is about 3127.4833332889. The cubic root of 9781152 is about 213.8602167472.

The spelling of 9781152 in words is "nine million, seven hundred eighty-one thousand, one hundred fifty-two".