9201620 has 12 divisors (see below), whose sum is σ = 19323444. Its totient is φ = 3680640.

The previous prime is 9201611. The next prime is 9201623. The reversal of 9201620 is 261029.

9201620 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 2709316 + 6492304 = 1646^2 + 2548^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 460081 = 9201620 / (9 + 2 + 0 + 1 + 6 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 9201592 and 9201601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9201623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 230021 + ... + 230060.

It is an arithmetic number, because the mean of its divisors is an integer number (1610287).

Almost surely, 2^9201620 is an apocalyptic number.

It is an amenable number.

9201620 is an abundant number, since it is smaller than the sum of its proper divisors (10121824).

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

9201620 is a wasteful number, since it uses less digits than its factorization.

9201620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460090 (or 460088 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 9201620 is about 3033.4172149574. The cubic root of 9201620 is about 209.5502088768.

Adding to 9201620 its reverse (261029), we get a palindrome (9462649).

The spelling of 9201620 in words is "nine million, two hundred one thousand, six hundred twenty".