20028167584 has 24 divisors (see below), whose sum is σ = 39516764868. Its totient is φ = 9992163840.

The previous prime is 20028167581. The next prime is 20028167597. The reversal of 20028167584 is 48576182002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19816755984 + 211411600 = 140772^2 + 14540^2 .

It is a super-2 number, since 2×20028167584² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20028167584.

It is not an unprimeable number, because it can be changed into a prime (20028167581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 670147 + ... + 699394.

Almost surely, 2^20028167584 is an apocalyptic number.

It is an amenable number.

20028167584 is a deficient number, since it is larger than the sum of its proper divisors (19488597284).

20028167584 is a wasteful number, since it uses less digits than its factorization.

20028167584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370008 (or 1370000 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 43.

The spelling of 20028167584 in words is "twenty billion, twenty-eight million, one hundred sixty-seven thousand, five hundred eighty-four".