220428444312 has 32 divisors (see below), whose sum is σ = 612301234800. Its totient is φ = 73476148032.

The previous prime is 220428444307. The next prime is 220428444319. The reversal of 220428444312 is 213444824022.

220428444312 is a `hidden beast` number, since 2 + 20 + 4 + 284 + 44 + 312 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220428444319) 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, 510250813 + ... + 510251244.

Almost surely, 2^220428444312 is an apocalyptic number.

It is an amenable number.

220428444312 is an abundant number, since it is smaller than the sum of its proper divisors (391872790488).

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

220428444312 is a wasteful number, since it uses less digits than its factorization.

220428444312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020502072 (or 1020502062 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 36.

The spelling of 220428444312 in words is "two hundred twenty billion, four hundred twenty-eight million, four hundred forty-four thousand, three hundred twelve".