9678220 has 24 divisors (see below), whose sum is σ = 21394800. Its totient is φ = 3667392.

The previous prime is 9678209. The next prime is 9678233. The reversal of 9678220 is 228769.

9678220 = 271² + 272² + ... + 365².

9678220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an Ulam number.

It is a congruent number.

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, 12355 + ... + 13114.

It is an arithmetic number, because the mean of its divisors is an integer number (891450).

Almost surely, 2^9678220 is an apocalyptic number.

It is an amenable number.

9678220 is an abundant number, since it is smaller than the sum of its proper divisors (11716580).

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

9678220 is a wasteful number, since it uses less digits than its factorization.

9678220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25497 (or 25495 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 9678220 is about 3110.9837672351. The cubic root of 9678220 is about 213.1073833846.

The spelling of 9678220 in words is "nine million, six hundred seventy-eight thousand, two hundred twenty".