243129200 has 30 divisors (see below), whose sum is σ = 584118864. Its totient is φ = 97251520.

The previous prime is 243129199. The next prime is 243129247. The reversal of 243129200 is 2921342.

It is a super-2 number, since 2×243129200² = 118223615785280000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 303512 + ... + 304311.

Almost surely, 2^243129200 is an apocalyptic number.

243129200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243129200 is an abundant number, since it is smaller than the sum of its proper divisors (340989664).

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

243129200 is a wasteful number, since it uses less digits than its factorization.

243129200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607841 (or 607830 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 243129200 is about 15592.6008093583. The cubic root of 243129200 is about 624.1357227239.

The spelling of 243129200 in words is "two hundred forty-three million, one hundred twenty-nine thousand, two hundred".