2002220028 has 36 divisors (see below), whose sum is σ = 5066025328. Its totient is φ = 666766080.

The previous prime is 2002219991. The next prime is 2002220029. The reversal of 2002220028 is 8200222002.

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 not an unprimeable number, because it can be changed into a prime (2002220029) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12108 + ... + 64428.

Almost surely, 2^2002220028 is an apocalyptic number.

It is an amenable number.

2002220028 is an abundant number, since it is smaller than the sum of its proper divisors (3063805300).

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

2002220028 is a wasteful number, since it uses less digits than its factorization.

2002220028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53394 (or 53389 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

The square root of 2002220028 is about 44746.1733335936. The cubic root of 2002220028 is about 1260.3870541817.

The spelling of 2002220028 in words is "two billion, two million, two hundred twenty thousand, twenty-eight".