20220028 has 12 divisors (see below), whose sum is σ = 37247560. Its totient is φ = 9577872.

The previous prime is 20220023. The next prime is 20220041. The reversal of 20220028 is 82002202.

It is a junction number, because it is equal to n+sod(n) for n = 20219993 and 20220020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20220023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132951 + ... + 133102.

Almost surely, 2^20220028 is an apocalyptic number.

It is an amenable number.

20220028 is a deficient number, since it is larger than the sum of its proper divisors (17027532).

20220028 is a wasteful number, since it uses less digits than its factorization.

20220028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266076 (or 266074 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 20220028 is about 4496.6685446005. The cubic root of 20220028 is about 272.4335466270.

The spelling of 20220028 in words is "twenty million, two hundred twenty thousand, twenty-eight".