20284466846 has 16 divisors (see below), whose sum is σ = 35972454240. Its totient is φ = 8393572320.

The previous prime is 20284466819. The next prime is 20284466849. The reversal of 20284466846 is 64866448202.

It is a super-2 number, since 2×20284466846² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20284466794 and 20284466803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20284466849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24980465 + ... + 24981276.

It is an arithmetic number, because the mean of its divisors is an integer number (2248278390).

Almost surely, 2^20284466846 is an apocalyptic number.

20284466846 is a deficient number, since it is larger than the sum of its proper divisors (15687987394).

20284466846 is a wasteful number, since it uses less digits than its factorization.

20284466846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49961779.

The product of its (nonzero) digits is 3538944, while the sum is 50.

The spelling of 20284466846 in words is "twenty billion, two hundred eighty-four million, four hundred sixty-six thousand, eight hundred forty-six".