9902772 has 72 divisors (see below), whose sum is σ = 28933632. Its totient is φ = 2822400.

The previous prime is 9902749. The next prime is 9902797. The reversal of 9902772 is 2772099.

9902772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5997 + ... + 7467.

It is an arithmetic number, because the mean of its divisors is an integer number (401856).

Almost surely, 2^9902772 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 9902772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14466816).

9902772 is an abundant number, since it is smaller than the sum of its proper divisors (19030860).

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

9902772 is a wasteful number, since it uses less digits than its factorization.

9902772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1509 (or 1504 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

The square root of 9902772 is about 3146.8670133960. The cubic root of 9902772 is about 214.7429558373.

It can be divided in two parts, 99027 and 72, that added together give a palindrome (99099).

The spelling of 9902772 in words is "nine million, nine hundred two thousand, seven hundred seventy-two".