243427530 has 32 divisors (see below), whose sum is σ = 584812224. Its totient is φ = 64848896.

The previous prime is 243427529. The next prime is 243427543. The reversal of 243427530 is 35724342.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31402 + ... + 38378.

It is an arithmetic number, because the mean of its divisors is an integer number (18275382).

Almost surely, 2^243427530 is an apocalyptic number.

243427530 is an abundant number, since it is smaller than the sum of its proper divisors (341384694).

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

243427530 is a wasteful number, since it uses less digits than its factorization.

243427530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8150.

The product of its (nonzero) digits is 20160, while the sum is 30.

The square root of 243427530 is about 15602.1642729462. The cubic root of 243427530 is about 624.3908988528.

The spelling of 243427530 in words is "two hundred forty-three million, four hundred twenty-seven thousand, five hundred thirty".