20627278884 has 135 divisors (see below), whose sum is σ = 55161097761. Its totient is φ = 6721509600.

The previous prime is 20627278879. The next prime is 20627278901. The reversal of 20627278884 is 48887272602.

The square root of 20627278884 is 143622.

It is a perfect power (a square), and thus also a powerful number.

20627278884 is a `hidden beast` number, since 2 + 0 + 627 + 2 + 7 + 8 + 8 + 8 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 19818445284 + 808833600 = 140778^2 + 28440^2 .

It is a super-3 number, since 3×20627278884³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 20627278884.

It is an unprimeable number.

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 44 ways as a sum of consecutive naturals, for example, 204230434 + ... + 204230534.

Almost surely, 2^20627278884 is an apocalyptic number.

20627278884 is the 143622-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20627278884

20627278884 is an abundant number, since it is smaller than the sum of its proper divisors (34533818877).

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

20627278884 is an equidigital number, since it uses as much as digits as its factorization.

20627278884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 376 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 4816896, while the sum is 54.

It can be divided in two parts, 206272 and 78884, that added together give a square (285156 = 534²).

The spelling of 20627278884 in words is "twenty billion, six hundred twenty-seven million, two hundred seventy-eight thousand, eight hundred eighty-four".