20550960 has 240 divisors, whose sum is σ = 77298624. Its totient is φ = 4866048.

The previous prime is 20550941. The next prime is 20550997. The reversal of 20550960 is 6905502.

20550960 is a `hidden beast` number, since 20 + 550 + 96 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

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 47 ways as a sum of consecutive naturals, for example, 281484 + ... + 281556.

Almost surely, 2^20550960 is an apocalyptic number.

20550960 is a gapful number since it is divisible by the number (20) 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 20550960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38649312).

20550960 is an abundant number, since it is smaller than the sum of its proper divisors (56747664).

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

20550960 is a wasteful number, since it uses less digits than its factorization.

20550960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 27.

The square root of 20550960 is about 4533.3166666360. The cubic root of 20550960 is about 273.9117765231.

The spelling of 20550960 in words is "twenty million, five hundred fifty thousand, nine hundred sixty".