22202028 has 18 divisors (see below), whose sum is σ = 56121884. Its totient is φ = 7400664.

The previous prime is 22202027. The next prime is 22202069. The reversal of 22202028 is 82020222.

It is a tau number, because it is divible by the number of its divisors (18).

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 22202028.

It is not an unprimeable number, because it can be changed into a prime (22202021) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 308326 + ... + 308397.

Almost surely, 2^22202028 is an apocalyptic number.

It is an amenable number.

22202028 is an abundant number, since it is smaller than the sum of its proper divisors (33919856).

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

22202028 is a wasteful number, since it uses less digits than its factorization.

22202028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616733 (or 616728 counting only the distinct ones).

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

The square root of 22202028 is about 4711.9028003557. The cubic root of 22202028 is about 281.0590336240.

The spelling of 22202028 in words is "twenty-two million, two hundred two thousand, twenty-eight".