27921032200 has 24 divisors (see below), whose sum is σ = 64916400330. Its totient is φ = 11168412800.

The previous prime is 27921032159. The next prime is 27921032201. The reversal of 27921032200 is 223012972.

It can be written as a sum of positive squares in 3 ways, for example, as 13464817444 + 14456214756 = 116038^2 + 120234^2 .

It is a super-2 number, since 2×27921032200² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27921032201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69802381 + ... + 69802780.

Almost surely, 2^27921032200 is an apocalyptic number.

27921032200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27921032200 is an abundant number, since it is smaller than the sum of its proper divisors (36995368130).

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

27921032200 is a wasteful number, since it uses less digits than its factorization.

27921032200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139605177 (or 139605168 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The spelling of 27921032200 in words is "twenty-seven billion, nine hundred twenty-one million, thirty-two thousand, two hundred".