20679028 has 12 divisors (see below), whose sum is σ = 36802080. Its totient is φ = 10164152.

The previous prime is 20679023. The next prime is 20679031. The reversal of 20679028 is 82097602.

It is a junction number, because it is equal to n+sod(n) for n = 20678984 and 20679002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20679023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43576 + ... + 44047.

It is an arithmetic number, because the mean of its divisors is an integer number (3066840).

Almost surely, 2^20679028 is an apocalyptic number.

It is an amenable number.

20679028 is a deficient number, since it is larger than the sum of its proper divisors (16123052).

20679028 is a wasteful number, since it uses less digits than its factorization.

20679028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87686 (or 87684 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 20679028 is about 4547.4199278272. The cubic root of 20679028 is about 274.4795799467.

The spelling of 20679028 in words is "twenty million, six hundred seventy-nine thousand, twenty-eight".