9772120 has 16 divisors (see below), whose sum is σ = 21987360. Its totient is φ = 3908832.

The previous prime is 9772097. The next prime is 9772121. The reversal of 9772120 is 212779.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9772121) 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, 122112 + ... + 122191.

It is an arithmetic number, because the mean of its divisors is an integer number (1374210).

Almost surely, 2^9772120 is an apocalyptic number.

It is an amenable number.

9772120 is an abundant number, since it is smaller than the sum of its proper divisors (12215240).

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

9772120 is a wasteful number, since it uses less digits than its factorization.

9772120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244314 (or 244310 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 9772120 is about 3126.0390272676. The cubic root of 9772120 is about 213.7943696864.

Adding to 9772120 its reverse (212779), we get a palindrome (9984899).

The spelling of 9772120 in words is "nine million, seven hundred seventy-two thousand, one hundred twenty".