9970720 has 48 divisors (see below), whose sum is σ = 23827608. Its totient is φ = 3942400.

The previous prime is 9970703. The next prime is 9970729. The reversal of 9970720 is 270799.

It can be written as a sum of positive squares in 4 ways, for example, as 7862416 + 2108304 = 2804^2 + 1452^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9970729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15852 + ... + 16468.

Almost surely, 2^9970720 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 9970720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11913804).

9970720 is an abundant number, since it is smaller than the sum of its proper divisors (13856888).

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

9970720 is a wasteful number, since it uses less digits than its factorization.

9970720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733 (or 725 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 34.

The square root of 9970720 is about 3157.6446918550. The cubic root of 9970720 is about 215.2329906167.

The spelling of 9970720 in words is "nine million, nine hundred seventy thousand, seven hundred twenty".