20055006 has 16 divisors (see below), whose sum is σ = 44566800. Its totient is φ = 6684984.

The previous prime is 20055001. The next prime is 20055017. The reversal of 20055006 is 60055002.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 20055006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20055001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185641 + ... + 185748.

It is an arithmetic number, because the mean of its divisors is an integer number (2785425).

Almost surely, 2^20055006 is an apocalyptic number.

20055006 is an abundant number, since it is smaller than the sum of its proper divisors (24511794).

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

20055006 is a wasteful number, since it uses less digits than its factorization.

20055006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 371400 (or 371394 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 18.

The square root of 20055006 is about 4478.2815900745. The cubic root of 20055006 is about 271.6903826302.

The spelling of 20055006 in words is "twenty million, fifty-five thousand, six".