9812220 has 48 divisors (see below), whose sum is σ = 29973888. Its totient is φ = 2378560.

The previous prime is 9812207. The next prime is 9812233. The reversal of 9812220 is 222189.

It is an interprime number because it is at equal distance from previous prime (9812207) and next prime (9812233).

It is a super-2 number, since 2×9812220² = 192559322656800, which contains 22 as substring.

It is a congruent number.

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, 6774 + ... + 8093.

It is an arithmetic number, because the mean of its divisors is an integer number (624456).

Almost surely, 2^9812220 is an apocalyptic number.

It is an amenable number.

9812220 is an abundant number, since it is smaller than the sum of its proper divisors (20161668).

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

9812220 is a wasteful number, since it uses less digits than its factorization.

9812220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14890 (or 14888 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 9812220 is about 3132.4463283511. The cubic root of 9812220 is about 214.0864064266.

The spelling of 9812220 in words is "nine million, eight hundred twelve thousand, two hundred twenty".