9978252 has 48 divisors (see below), whose sum is σ = 25274592. Its totient is φ = 3051520.

The previous prime is 9978229. The next prime is 9978277. The reversal of 9978252 is 2528799.

It is a d-powerful number, because it can be written as 9⁷ + 9⁷ + 7⁶ + 8³ + 2¹⁴ + 5⁶ + 2¹⁸ .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7768 + ... + 8960.

It is an arithmetic number, because the mean of its divisors is an integer number (526554).

Almost surely, 2^9978252 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 9978252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12637296).

9978252 is an abundant number, since it is smaller than the sum of its proper divisors (15296340).

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

9978252 is a wasteful number, since it uses less digits than its factorization.

9978252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258 (or 1256 counting only the distinct ones).

The product of its digits is 90720, while the sum is 42.

The square root of 9978252 is about 3158.8371278051. The cubic root of 9978252 is about 215.2871734924.

The spelling of 9978252 in words is "nine million, nine hundred seventy-eight thousand, two hundred fifty-two".