10720720 has 40 divisors (see below), whose sum is σ = 25790760. Its totient is φ = 4139520.

The previous prime is 10720711. The next prime is 10720733. The reversal of 10720720 is 2702701.

It can be written as a sum of positive squares in 4 ways, for example, as 760384 + 9960336 = 872^2 + 3156^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×10720720² = 229867674636800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10 + ... + 4630.

It is an arithmetic number, because the mean of its divisors is an integer number (644769).

Almost surely, 2^10720720 is an apocalyptic number.

10720720 is a gapful number since it is divisible by the number (10) 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 10720720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12895380).

10720720 is an abundant number, since it is smaller than the sum of its proper divisors (15070040).

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

10720720 is a wasteful number, since it uses less digits than its factorization.

10720720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4663 (or 4657 counting only the distinct ones).

The product of its (nonzero) digits is 196, while the sum is 19.

The square root of 10720720 is about 3274.2510594027. The cubic root of 10720720 is about 220.4996906292.

The spelling of 10720720 in words is "ten million, seven hundred twenty thousand, seven hundred twenty".