243490529 has 12 divisors (see below), whose sum is σ = 260841744. Its totient is φ = 227209752.

The previous prime is 243490517. The next prime is 243490601. The reversal of 243490529 is 925094342.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-243490529 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 243490492 and 243490501.

It is not an unprimeable number, because it can be changed into a prime (243490129) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19154 + ... + 29220.

It is an arithmetic number, because the mean of its divisors is an integer number (21736812).

Almost surely, 2^243490529 is an apocalyptic number.

It is an amenable number.

243490529 is a deficient number, since it is larger than the sum of its proper divisors (17351215).

243490529 is a wasteful number, since it uses less digits than its factorization.

243490529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10172 (or 10153 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 38.

The square root of 243490529 is about 15604.1830609616. The cubic root of 243490529 is about 624.4447582900. Note that the first 3 decimals are identical.

The spelling of 243490529 in words is "two hundred forty-three million, four hundred ninety thousand, five hundred twenty-nine".