9702990 has 112 divisors (see below), whose sum is σ = 28802736. Its totient is φ = 2352240.

The previous prime is 9702983. The next prime is 9703013. The reversal of 9702990 is 992079.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 882085 + ... + 882095.

Almost surely, 2^9702990 is an apocalyptic number.

9702990 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 9702990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14401368).

9702990 is an abundant number, since it is smaller than the sum of its proper divisors (19099746).

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

9702990 is an equidigital number, since it uses as much as digits as its factorization.

9702990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58 (or 21 counting only the distinct ones).

The product of its (nonzero) digits is 10206, while the sum is 36.

The square root of 9702990 is about 3114.9622790654. The cubic root of 9702990 is about 213.2890343132.

The spelling of 9702990 in words is "nine million, seven hundred two thousand, nine hundred ninety".