20055456 has 72 divisors (see below), whose sum is σ = 57788640. Its totient is φ = 6596736.

The previous prime is 20055433. The next prime is 20055463. The reversal of 20055456 is 65455002.

20055456 is a `hidden beast` number, since 200 + 5 + 5 + 456 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23485 + ... + 24323.

It is an arithmetic number, because the mean of its divisors is an integer number (802620).

Almost surely, 2^20055456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20055456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28894320).

20055456 is an abundant number, since it is smaller than the sum of its proper divisors (37733184).

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

20055456 is a wasteful number, since it uses less digits than its factorization.

20055456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 938 (or 927 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 20055456 is about 4478.3318322786. The cubic root of 20055456 is about 271.6924147040.

The spelling of 20055456 in words is "twenty million, fifty-five thousand, four hundred fifty-six".