243929874 has 16 divisors (see below), whose sum is σ = 488013408. Its totient is φ = 81284352.

The previous prime is 243929831. The next prime is 243929879. The reversal of 243929874 is 478929342.

It is not an unprimeable number, because it can be changed into a prime (243929879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31474 + ... + 38450.

It is an arithmetic number, because the mean of its divisors is an integer number (30500838).

Almost surely, 2^243929874 is an apocalyptic number.

243929874 is an abundant number, since it is smaller than the sum of its proper divisors (244083534).

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

243929874 is a wasteful number, since it uses less digits than its factorization.

243929874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12809.

The product of its digits is 870912, while the sum is 48.

The square root of 243929874 is about 15618.2545119485. The cubic root of 243929874 is about 624.8201073735.

The spelling of 243929874 in words is "two hundred forty-three million, nine hundred twenty-nine thousand, eight hundred seventy-four".