10561720 has 64 divisors (see below), whose sum is σ = 26964000. Its totient is φ = 3691008.

The previous prime is 10561697. The next prime is 10561729. The reversal of 10561720 is 2716501.

It is a super-2 number, since 2×10561720² = 223099858716800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 10561691 and 10561700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10561729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9346 + ... + 10414.

Almost surely, 2^10561720 is an apocalyptic number.

10561720 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 10561720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13482000).

10561720 is an abundant number, since it is smaller than the sum of its proper divisors (16402280).

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

10561720 is a wasteful number, since it uses less digits than its factorization.

10561720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1112 (or 1108 counting only the distinct ones).

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 10561720 is about 3249.8799977845. The cubic root of 10561720 is about 219.4041728992.

The spelling of 10561720 in words is "ten million, five hundred sixty-one thousand, seven hundred twenty".