20120347200 has 84 divisors (see below), whose sum is σ = 66011521520. Its totient is φ = 5365424640.

The previous prime is 20120347189. The next prime is 20120347201. The reversal of 20120347200 is 274302102.

It is not an unprimeable number, because it can be changed into a prime (20120347201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2091070 + ... + 2100669.

Almost surely, 2^20120347200 is an apocalyptic number.

20120347200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20120347200 is an abundant number, since it is smaller than the sum of its proper divisors (45891174320).

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

20120347200 is a wasteful number, since it uses less digits than its factorization.

20120347200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4191764 (or 4191749 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

Adding to 20120347200 its reverse (274302102), we get a palindrome (20394649302).

The spelling of 20120347200 in words is "twenty billion, one hundred twenty million, three hundred forty-seven thousand, two hundred".