20012028 has 24 divisors (see below), whose sum is σ = 47781888. Its totient is φ = 6515376.

The previous prime is 20012023. The next prime is 20012053. The reversal of 20012028 is 82021002.

It is a junction number, because it is equal to n+sod(n) for n = 20011998 and 20012016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012023) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18876 + ... + 19907.

It is an arithmetic number, because the mean of its divisors is an integer number (1990912).

Almost surely, 2^20012028 is an apocalyptic number.

It is an amenable number.

20012028 is an abundant number, since it is smaller than the sum of its proper divisors (27769860).

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

20012028 is a wasteful number, since it uses less digits than its factorization.

20012028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38833 (or 38831 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 20012028 is about 4473.4805241557. The cubic root of 20012028 is about 271.4961657799.

The spelling of 20012028 in words is "twenty million, twelve thousand, twenty-eight".