20716028 has 12 divisors (see below), whose sum is σ = 36456840. Its totient is φ = 10299792.

The previous prime is 20716001. The next prime is 20716037. The reversal of 20716028 is 82061702.

It is a junction number, because it is equal to n+sod(n) for n = 20715988 and 20716006.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13751 + ... + 15182.

It is an arithmetic number, because the mean of its divisors is an integer number (3038070).

Almost surely, 2^20716028 is an apocalyptic number.

It is an amenable number.

20716028 is a deficient number, since it is larger than the sum of its proper divisors (15740812).

20716028 is a wasteful number, since it uses less digits than its factorization.

20716028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29116 (or 29114 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 20716028 is about 4551.4863506332. The cubic root of 20716028 is about 274.6431868210.

The spelling of 20716028 in words is "twenty million, seven hundred sixteen thousand, twenty-eight".