20206284 has 24 divisors (see below), whose sum is σ = 53883648. Its totient is φ = 5773200.

The previous prime is 20206283. The next prime is 20206309. The reversal of 20206284 is 48260202.

It is not an unprimeable number, because it can be changed into a prime (20206283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120192 + ... + 120359.

It is an arithmetic number, because the mean of its divisors is an integer number (2245152).

Almost surely, 2^20206284 is an apocalyptic number.

It is an amenable number.

20206284 is an abundant number, since it is smaller than the sum of its proper divisors (33677364).

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

20206284 is a wasteful number, since it uses less digits than its factorization.

20206284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240565 (or 240563 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 20206284 is about 4495.1400423124. The cubic root of 20206284 is about 272.3718062682.

Adding to 20206284 its reverse (48260202), we get a palindrome (68466486).

The spelling of 20206284 in words is "twenty million, two hundred six thousand, two hundred eighty-four".