9890730 has 24 divisors (see below), whose sum is σ = 25716132. Its totient is φ = 2637504.

The previous prime is 9890693. The next prime is 9890737. The reversal of 9890730 is 370989.

It can be written as a sum of positive squares in 2 ways, for example, as 9418761 + 471969 = 3069^2 + 687^2 .

It is not an unprimeable number, because it can be changed into a prime (9890737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54859 + ... + 55038.

Almost surely, 2^9890730 is an apocalyptic number.

9890730 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

9890730 is an abundant number, since it is smaller than the sum of its proper divisors (15825402).

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

9890730 is a wasteful number, since it uses less digits than its factorization.

9890730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109910 (or 109907 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 9890730 is about 3144.9530998093. The cubic root of 9890730 is about 214.6558763957.

The spelling of 9890730 in words is "nine million, eight hundred ninety thousand, seven hundred thirty".