10561920 has 64 divisors (see below), whose sum is σ = 33672240. Its totient is φ = 2816000.

The previous prime is 10561907. The next prime is 10561921. The reversal of 10561920 is 2916501.

It is a tau number, because it is divible by the number of its divisors (64).

It is a super-2 number, since 2×10561920² = 223108308172800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10561921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 831 + ... + 4670.

Almost surely, 2^10561920 is an apocalyptic number.

10561920 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 10561920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16836120).

10561920 is an abundant number, since it is smaller than the sum of its proper divisors (23110320).

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

10561920 is an equidigital number, since it uses as much as digits as its factorization.

10561920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5523 (or 5511 counting only the distinct ones).

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 10561920 is about 3249.9107680058. The cubic root of 10561920 is about 219.4055577923.

The spelling of 10561920 in words is "ten million, five hundred sixty-one thousand, nine hundred twenty".