20106284 has 24 divisors (see below), whose sum is σ = 39281088. Its totient is φ = 8925840.

The previous prime is 20106283. The next prime is 20106287. The reversal of 20106284 is 48260102.

It is a super-3 number, since 3×20106284³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (20106283) 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, 3422 + ... + 7205.

It is an arithmetic number, because the mean of its divisors is an integer number (1636712).

Almost surely, 2^20106284 is an apocalyptic number.

It is an amenable number.

20106284 is a deficient number, since it is larger than the sum of its proper divisors (19174804).

20106284 is a wasteful number, since it uses less digits than its factorization.

20106284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10685 (or 10683 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 20106284 is about 4484.0031222112. The cubic root of 20106284 is about 271.9217443562.

Adding to 20106284 its reverse (48260102), we get a palindrome (68366386).

The spelling of 20106284 in words is "twenty million, one hundred six thousand, two hundred eighty-four".