9275220 has 54 divisors (see below), whose sum is σ = 28259322. Its totient is φ = 2462496.

The previous prime is 9275219. The next prime is 9275257. The reversal of 9275220 is 225729.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7420176 + 1855044 = 2724^2 + 1362^2 .

It is a super-3 number, since 3×9275220³ (a number of 22 digits) contains 333 as substring.

It is an Ulam number.

It is a nialpdrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 40747 + ... + 40973.

Almost surely, 2^9275220 is an apocalyptic number.

9275220 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9275220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14129661).

9275220 is an abundant number, since it is smaller than the sum of its proper divisors (18984102).

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

9275220 is a wasteful number, since it uses less digits than its factorization.

9275220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 9275220 is about 3045.5245853547. The cubic root of 9275220 is about 210.1074280277.

The spelling of 9275220 in words is "nine million, two hundred seventy-five thousand, two hundred twenty".