9902830 has 32 divisors (see below), whose sum is σ = 20505024. Its totient is φ = 3373056.

The previous prime is 9902807. The next prime is 9902831. The reversal of 9902830 is 382099.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 9902792 and 9902801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9902831) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13144 + ... + 13876.

It is an arithmetic number, because the mean of its divisors is an integer number (640782).

Almost surely, 2^9902830 is an apocalyptic number.

9902830 is an abundant number, since it is smaller than the sum of its proper divisors (10602194).

9902830 is a wasteful number, since it uses less digits than its factorization.

9902830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 9902830 is about 3146.8762288975. The cubic root of 9902830 is about 214.7433750824.

The spelling of 9902830 in words is "nine million, nine hundred two thousand, eight hundred thirty".