20047236220 has 48 divisors (see below), whose sum is σ = 46792958688. Its totient is φ = 7152354560.

The previous prime is 20047236199. The next prime is 20047236257. The reversal of 20047236220 is 2263274002.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 847999 + ... + 871318.

It is an arithmetic number, because the mean of its divisors is an integer number (974853306).

Almost surely, 2^20047236220 is an apocalyptic number.

20047236220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20047236220 is an abundant number, since it is smaller than the sum of its proper divisors (26745722468).

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

20047236220 is a wasteful number, since it uses less digits than its factorization.

20047236220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719390 (or 1719388 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 28.

The spelling of 20047236220 in words is "twenty billion, forty-seven million, two hundred thirty-six thousand, two hundred twenty".