243401828 has 12 divisors (see below), whose sum is σ = 430739820. Its totient is φ = 120333312.

The previous prime is 243401777. The next prime is 243401833. The reversal of 243401828 is 828104342.

It can be written as a sum of positive squares in 2 ways, for example, as 23116864 + 220284964 = 4808^2 + 14842^2 .

It is a junction number, because it is equal to n+sod(n) for n = 243401794 and 243401803.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341501 + ... + 342212.

It is an arithmetic number, because the mean of its divisors is an integer number (35894985).

Almost surely, 2^243401828 is an apocalyptic number.

It is an amenable number.

243401828 is a deficient number, since it is larger than the sum of its proper divisors (187337992).

243401828 is a wasteful number, since it uses less digits than its factorization.

243401828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683806 (or 683804 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 243401828 is about 15601.3405834242. The cubic root of 243401828 is about 624.3689228945.

The spelling of 243401828 in words is "two hundred forty-three million, four hundred one thousand, eight hundred twenty-eight".