243255408 has 40 divisors (see below), whose sum is σ = 685539456. Its totient is φ = 73713600.

The previous prime is 243255401. The next prime is 243255437. The reversal of 243255408 is 804552342.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243255401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 229828 + ... + 230883.

Almost surely, 2^243255408 is an apocalyptic number.

It is an amenable number.

243255408 is an abundant number, since it is smaller than the sum of its proper divisors (442284048).

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

243255408 is a wasteful number, since it uses less digits than its factorization.

243255408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 460733 (or 460727 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 243255408 is about 15596.6473320390. The cubic root of 243255408 is about 624.2437000123.

The spelling of 243255408 in words is "two hundred forty-three million, two hundred fifty-five thousand, four hundred eight".