20144228634 has 16 divisors (see below), whose sum is σ = 44764952640. Its totient is φ = 6714742860.

The previous prime is 20144228569. The next prime is 20144228639. The reversal of 20144228634 is 43682244102.

20144228634 is a `hidden beast` number, since 2 + 0 + 14 + 4 + 2 + 2 + 8 + 634 = 666.

20144228634 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (20144228639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186520582 + ... + 186520689.

It is an arithmetic number, because the mean of its divisors is an integer number (2797809540).

Almost surely, 2^20144228634 is an apocalyptic number.

20144228634 is an abundant number, since it is smaller than the sum of its proper divisors (24620724006).

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

20144228634 is a wasteful number, since it uses less digits than its factorization.

20144228634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373041282 (or 373041276 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 36.

The spelling of 20144228634 in words is "twenty billion, one hundred forty-four million, two hundred twenty-eight thousand, six hundred thirty-four".