9220285 has 12 divisors (see below), whose sum is σ = 11351124. Its totient is φ = 7189760.

The previous prime is 9220283. The next prime is 9220291. The reversal of 9220285 is 5820229.

9220285 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 4251844 + 4968441 = 2062^2 + 2229^2 .

It is not a de Polignac number, because 9220285 - 2¹ = 9220283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9220283) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7857 + ... + 8953.

It is an arithmetic number, because the mean of its divisors is an integer number (945927).

Almost surely, 2^9220285 is an apocalyptic number.

It is an amenable number.

9220285 is a deficient number, since it is larger than the sum of its proper divisors (2130839).

9220285 is a wasteful number, since it uses less digits than its factorization.

9220285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1184 (or 1143 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 9220285 is about 3036.4922196508. The cubic root of 9220285 is about 209.6918003587.

The spelling of 9220285 in words is "nine million, two hundred twenty thousand, two hundred eighty-five".