243145650 has 192 divisors, whose sum is σ = 707097600. Its totient is φ = 54700800.

The previous prime is 243145601. The next prime is 243145681. The reversal of 243145650 is 56541342.

It is a super-2 number, since 2×243145650² = 118239614227845000, which contains 22 as substring.

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 (17) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1631776 + ... + 1631924.

It is an arithmetic number, because the mean of its divisors is an integer number (3682800).

Almost surely, 2^243145650 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243145650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353548800).

243145650 is an abundant number, since it is smaller than the sum of its proper divisors (463951950).

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

243145650 is a wasteful number, since it uses less digits than its factorization.

243145650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 243145650 is about 15593.1282942199. The cubic root of 243145650 is about 624.1497986433.

Adding to 243145650 its reverse (56541342), we get a palindrome (299686992).

The spelling of 243145650 in words is "two hundred forty-three million, one hundred forty-five thousand, six hundred fifty".