9958220 has 24 divisors (see below), whose sum is σ = 20992608. Its totient is φ = 3968000.

The previous prime is 9958199. The next prime is 9958229. The reversal of 9958220 is 228599.

It is a super-2 number, since 2×9958220² = 198332291136800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (9958229) 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, 5420 + ... + 7020.

It is an arithmetic number, because the mean of its divisors is an integer number (874692).

Almost surely, 2^9958220 is an apocalyptic number.

It is an amenable number.

9958220 is an abundant number, since it is smaller than the sum of its proper divisors (11034388).

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

9958220 is a wasteful number, since it uses less digits than its factorization.

9958220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1921 (or 1919 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 35.

The square root of 9958220 is about 3155.6647477196. The cubic root of 9958220 is about 215.1430092357.

The spelling of 9958220 in words is "nine million, nine hundred fifty-eight thousand, two hundred twenty".