20140028 has 12 divisors (see below), whose sum is σ = 35276472. Its totient is φ = 10061040.

The previous prime is 20140027. The next prime is 20140031. The reversal of 20140028 is 82004102.

It is a junction number, because it is equal to n+sod(n) for n = 20139988 and 20140015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20140027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7751 + ... + 10017.

It is an arithmetic number, because the mean of its divisors is an integer number (2939706).

Almost surely, 2^20140028 is an apocalyptic number.

It is an amenable number.

20140028 is a deficient number, since it is larger than the sum of its proper divisors (15136444).

20140028 is a wasteful number, since it uses less digits than its factorization.

20140028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4492 (or 4490 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 20140028 is about 4487.7642540579. The cubic root of 20140028 is about 272.0737797260.

The spelling of 20140028 in words is "twenty million, one hundred forty thousand, twenty-eight".