20055408 has 20 divisors (see below), whose sum is σ = 51809928. Its totient is φ = 6685120.

The previous prime is 20055407. The next prime is 20055433. The reversal of 20055408 is 80455002.

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 (20055403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208863 + ... + 208958.

Almost surely, 2^20055408 is an apocalyptic number.

It is an amenable number.

20055408 is an abundant number, since it is smaller than the sum of its proper divisors (31754520).

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

20055408 is a wasteful number, since it uses less digits than its factorization.

20055408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417832 (or 417826 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 20055408 is about 4478.3264731370. The cubic root of 20055408 is about 271.6921979509.

The spelling of 20055408 in words is "twenty million, fifty-five thousand, four hundred eight".