9772140 has 96 divisors (see below), whose sum is σ = 31933440. Its totient is φ = 2186496.

The previous prime is 9772129. The next prime is 9772141. The reversal of 9772140 is 412779.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a nialpdrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 9772098 and 9772107.

It is not an unprimeable number, because it can be changed into a prime (9772141) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 22041 + ... + 22479.

It is an arithmetic number, because the mean of its divisors is an integer number (332640).

Almost surely, 2^9772140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9772140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (15966720).

9772140 is an abundant number, since it is smaller than the sum of its proper divisors (22161300).

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

9772140 is a wasteful number, since it uses less digits than its factorization.

9772140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511 (or 509 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 9772140 is about 3126.0422262023. The cubic root of 9772140 is about 213.7945155396.

The spelling of 9772140 in words is "nine million, seven hundred seventy-two thousand, one hundred forty".