243497004 has 12 divisors (see below), whose sum is σ = 568159704. Its totient is φ = 81165664.

The previous prime is 243496993. The next prime is 243497029. The reversal of 243497004 is 400794342.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10145697 + ... + 10145720.

It is an arithmetic number, because the mean of its divisors is an integer number (47346642).

Almost surely, 2^243497004 is an apocalyptic number.

It is an amenable number.

243497004 is an abundant number, since it is smaller than the sum of its proper divisors (324662700).

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

243497004 is a wasteful number, since it uses less digits than its factorization.

243497004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20291424 (or 20291422 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 243497004 is about 15604.3905359998. The cubic root of 243497004 is about 624.4502934047.

The spelling of 243497004 in words is "two hundred forty-three million, four hundred ninety-seven thousand, four".