20286016 has 21 divisors (see below), whose sum is σ = 40326691.
Its totient is φ = 10124992.
The previous prime is 20285989. The next prime is 20286017. The reversal of 20286016 is 61068202.
Multipling 20286016 by its sum of digits (25), we get a square (507150400 = 225202).
The square root of 20286016 is 4504.
It is a perfect power (a square), and thus also a powerful number.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (20286017) by changing a digit.
It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 35751 + ... + 36313.
Almost surely, 220286016 is an apocalyptic number.
20286016 is the 4504-th square number.
It is an amenable number.
20286016 is a deficient number, since it is larger than the sum of its proper divisors (20040675).
20286016 is an frugal number, since it uses more digits than its factorization.
20286016 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1138 (or 565 counting only the distinct ones).
The product of its (nonzero) digits is 1152, while the sum is 25.
The cubic root of 20286016 is about 272.7295868356.
The spelling of 20286016 in words is "twenty million, two hundred eighty-six thousand, sixteen".