243200904 has 16 divisors (see below), whose sum is σ = 608002320. Its totient is φ = 81066960.

The previous prime is 243200879. The next prime is 243200911. The reversal of 243200904 is 409002342.

It is a happy number.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 10133371 = 243200904 / (2 + 4 + 3 + 2 + 0 + 0 + 9 + 0 + 4).

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 3 ways as a sum of consecutive naturals, for example, 5066662 + ... + 5066709.

It is an arithmetic number, because the mean of its divisors is an integer number (38000145).

Almost surely, 2^243200904 is an apocalyptic number.

243200904 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

243200904 is an abundant number, since it is smaller than the sum of its proper divisors (364801416).

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

243200904 is a wasteful number, since it uses less digits than its factorization.

243200904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10133380 (or 10133376 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 243200904 is about 15594.8999355559. The cubic root of 243200904 is about 624.1970736833.

The spelling of 243200904 in words is "two hundred forty-three million, two hundred thousand, nine hundred four".