9890280 has 96 divisors (see below), whose sum is σ = 32628960. Its totient is φ = 2597760.

The previous prime is 9890263. The next prime is 9890297. The reversal of 9890280 is 820989.

It is an interprime number because it is at equal distance from previous prime (9890263) and next prime (9890297).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29715 + ... + 30045.

It is an arithmetic number, because the mean of its divisors is an integer number (339885).

Almost surely, 2^9890280 is an apocalyptic number.

9890280 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9890280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16314480).

9890280 is an abundant number, since it is smaller than the sum of its proper divisors (22738680).

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

9890280 is a wasteful number, since it uses less digits than its factorization.

9890280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431 (or 424 counting only the distinct ones).

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

The square root of 9890280 is about 3144.8815557982. The cubic root of 9890280 is about 214.6526209363.

The spelling of 9890280 in words is "nine million, eight hundred ninety thousand, two hundred eighty".