9978522 has 16 divisors (see below), whose sum is σ = 20334240. Its totient is φ = 3263312.

The previous prime is 9978461. The next prime is 9978547. The reversal of 9978522 is 2258799.

It is a d-powerful number, because it can be written as 9⁷ + 9⁷ + 7⁵ + 8⁴ + 5⁸ + 2⁵ + 2¹⁰ .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15372 + ... + 16007.

It is an arithmetic number, because the mean of its divisors is an integer number (1270890).

Almost surely, 2^9978522 is an apocalyptic number.

9978522 is an abundant number, since it is smaller than the sum of its proper divisors (10355718).

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

9978522 is a wasteful number, since it uses less digits than its factorization.

9978522 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31437.

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

The square root of 9978522 is about 3158.8798647622. The cubic root of 9978522 is about 215.2891152825.

The spelling of 9978522 in words is "nine million, nine hundred seventy-eight thousand, five hundred twenty-two".