2129727900 has 72 divisors (see below), whose sum is σ = 6360815104. Its totient is φ = 549604800.

The previous prime is 2129727889. The next prime is 2129727911. The reversal of 2129727900 is 97279212.

It is an interprime number because it is at equal distance from previous prime (2129727889) and next prime (2129727911).

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 23 ways as a sum of consecutive naturals, for example, 105202 + ... + 123801.

Almost surely, 2^2129727900 is an apocalyptic number.

2129727900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2129727900 is an abundant number, since it is smaller than the sum of its proper divisors (4231087204).

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

2129727900 is a wasteful number, since it uses less digits than its factorization.

2129727900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229051 (or 229044 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 2129727900 is about 46148.9750698756. The cubic root of 2129727900 is about 1286.5935606251.

The spelling of 2129727900 in words is "two billion, one hundred twenty-nine million, seven hundred twenty-seven thousand, nine hundred".