10555920 has 140 divisors (see below), whose sum is σ = 37000236. Its totient is φ = 2799360.

The previous prime is 10555891. The next prime is 10555927. The reversal of 10555920 is 2955501.

10555920 is a `hidden beast` number, since 105 + 559 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1411344 + 9144576 = 1188^2 + 3024^2 .

It is a super-2 number, since 2×10555920² = 222854894092800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10555927) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 58230 + ... + 58410.

Almost surely, 2^10555920 is an apocalyptic number.

10555920 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 10555920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18500118).

10555920 is an abundant number, since it is smaller than the sum of its proper divisors (26444316).

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

10555920 is an equidigital number, since it uses as much as digits as its factorization.

10555920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212 (or 191 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 27.

The square root of 10555920 is about 3248.9875346021. The cubic root of 10555920 is about 219.3640033936.

The spelling of 10555920 in words is "ten million, five hundred fifty-five thousand, nine hundred twenty".