243146416 has 20 divisors (see below), whose sum is σ = 481120992. Its totient is φ = 118986176.

The previous prime is 243146399. The next prime is 243146443. The reversal of 243146416 is 614641342.

It is a super-2 number, since 2×243146416² = 118240359227290112, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160915 + ... + 162418.

Almost surely, 2^243146416 is an apocalyptic number.

It is an amenable number.

243146416 is a deficient number, since it is larger than the sum of its proper divisors (237974576).

243146416 is a wasteful number, since it uses less digits than its factorization.

243146416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323388 (or 323382 counting only the distinct ones).

The product of its digits is 13824, while the sum is 31.

The square root of 243146416 is about 15593.1528563020. The cubic root of 243146416 is about 624.1504540780.

Adding to 243146416 its reverse (614641342), we get a palindrome (857787758).

The spelling of 243146416 in words is "two hundred forty-three million, one hundred forty-six thousand, four hundred sixteen".