20023028 has 6 divisors (see below), whose sum is σ = 35040306. Its totient is φ = 10011512.

The previous prime is 20023027. The next prime is 20023037. The reversal of 20023028 is 82032002.

It can be written as a sum of positive squares in only one way, i.e., 19695844 + 327184 = 4438^2 + 572^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20022997 and 20023015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2502875 + ... + 2502882.

It is an arithmetic number, because the mean of its divisors is an integer number (5840051).

Almost surely, 2^20023028 is an apocalyptic number.

It is an amenable number.

20023028 is a deficient number, since it is larger than the sum of its proper divisors (15017278).

20023028 is a wasteful number, since it uses less digits than its factorization.

20023028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5005761 (or 5005759 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 20023028 is about 4474.7098229941. The cubic root of 20023028 is about 271.5459010491.

The spelling of 20023028 in words is "twenty million, twenty-three thousand, twenty-eight".