9889020 has 48 divisors (see below), whose sum is σ = 30767520. Its totient is φ = 2636928.

The previous prime is 9889013. The next prime is 9889037. The reversal of 9889020 is 209889.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8617 + ... + 9696.

It is an arithmetic number, because the mean of its divisors is an integer number (640990).

Almost surely, 2^9889020 is an apocalyptic number.

9889020 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

9889020 is an abundant number, since it is smaller than the sum of its proper divisors (20878500).

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

9889020 is a wasteful number, since it uses less digits than its factorization.

9889020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18331 (or 18323 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 9889020 is about 3144.6812239081. The cubic root of 9889020 is about 214.6435051247.

The spelling of 9889020 in words is "nine million, eight hundred eighty-nine thousand, twenty".