220550004 has 36 divisors (see below), whose sum is σ = 559322400. Its totient is φ = 73276560.

The previous prime is 220549981. The next prime is 220550021. The reversal of 220550004 is 400055022.

220550004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

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, 1347 + ... + 21045.

Almost surely, 2^220550004 is an apocalyptic number.

It is an amenable number.

220550004 is an abundant number, since it is smaller than the sum of its proper divisors (338772396).

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

220550004 is a wasteful number, since it uses less digits than its factorization.

220550004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20020 (or 20015 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 220550004 is about 14850.9260317328. The cubic root of 220550004 is about 604.1837262521.

The spelling of 220550004 in words is "two hundred twenty million, five hundred fifty thousand, four".