243720466 has 64 divisors (see below), whose sum is σ = 456295680. Its totient is φ = 96194560.

The previous prime is 243720461. The next prime is 243720479. The reversal of 243720466 is 664027342.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is not an unprimeable number, because it can be changed into a prime (243720461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248970 + ... + 249946.

It is an arithmetic number, because the mean of its divisors is an integer number (7129620).

Almost surely, 2^243720466 is an apocalyptic number.

243720466 is a deficient number, since it is larger than the sum of its proper divisors (212575214).

243720466 is a wasteful number, since it uses less digits than its factorization.

243720466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1059.

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 243720466 is about 15611.5491223645. The cubic root of 243720466 is about 624.6412584466.

The spelling of 243720466 in words is "two hundred forty-three million, seven hundred twenty thousand, four hundred sixty-six".