9818772 has 12 divisors (see below), whose sum is σ = 22910496. Its totient is φ = 3272920.

The previous prime is 9818761. The next prime is 9818773. The reversal of 9818772 is 2778189.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9818773) 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 3 ways as a sum of consecutive naturals, for example, 409104 + ... + 409127.

It is an arithmetic number, because the mean of its divisors is an integer number (1909208).

Almost surely, 2^9818772 is an apocalyptic number.

It is an amenable number.

9818772 is an abundant number, since it is smaller than the sum of its proper divisors (13091724).

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

9818772 is a wasteful number, since it uses less digits than its factorization.

9818772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 818238 (or 818236 counting only the distinct ones).

The product of its digits is 56448, while the sum is 42.

The square root of 9818772 is about 3133.4919817992. The cubic root of 9818772 is about 214.1340470910.

The spelling of 9818772 in words is "nine million, eight hundred eighteen thousand, seven hundred seventy-two".