243045620 has 12 divisors (see below), whose sum is σ = 510395844. Its totient is φ = 97218240.

The previous prime is 243045599. The next prime is 243045631. The reversal of 243045620 is 26540342.

It can be written as a sum of positive squares in 2 ways, for example, as 189667984 + 53377636 = 13772^2 + 7306^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 243045620.

It is a congruent number.

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, 6076121 + ... + 6076160.

It is an arithmetic number, because the mean of its divisors is an integer number (42532987).

Almost surely, 2^243045620 is an apocalyptic number.

243045620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243045620 is an abundant number, since it is smaller than the sum of its proper divisors (267350224).

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

243045620 is a wasteful number, since it uses less digits than its factorization.

243045620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12152290 (or 12152288 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

The square root of 243045620 is about 15589.9204616316. The cubic root of 243045620 is about 624.0641952638.

Adding to 243045620 its reverse (26540342), we get a palindrome (269585962).

The spelling of 243045620 in words is "two hundred forty-three million, forty-five thousand, six hundred twenty".