243153660 has 24 divisors (see below), whose sum is σ = 680830416. Its totient is φ = 64840960.

The previous prime is 243153649. The next prime is 243153707. The reversal of 243153660 is 66351342.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2026221 + ... + 2026340.

It is an arithmetic number, because the mean of its divisors is an integer number (28367934).

Almost surely, 2^243153660 is an apocalyptic number.

243153660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243153660 is an abundant number, since it is smaller than the sum of its proper divisors (437676756).

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

243153660 is a wasteful number, since it uses less digits than its factorization.

243153660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4052573 (or 4052571 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 30.

The square root of 243153660 is about 15593.3851360120. The cubic root of 243153660 is about 624.1566524022.

The spelling of 243153660 in words is "two hundred forty-three million, one hundred fifty-three thousand, six hundred sixty".