243412020 has 96 divisors (see below), whose sum is σ = 764951040. Its totient is φ = 64252800.

The previous prime is 243412009. The next prime is 243412027. The reversal of 243412020 is 20214342.

243412020 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×243412020² = 118498822960960800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 243411984 and 243412002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243412027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52309 + ... + 56771.

It is an arithmetic number, because the mean of its divisors is an integer number (7968240).

Almost surely, 2^243412020 is an apocalyptic number.

243412020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 243412020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (382475520).

243412020 is an abundant number, since it is smaller than the sum of its proper divisors (521539020).

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

243412020 is a wasteful number, since it uses less digits than its factorization.

243412020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4582 (or 4574 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 243412020 is about 15601.6672186020. The cubic root of 243412020 is about 624.3776375363.

Adding to 243412020 its reverse (20214342), we get a palindrome (263626362).

The spelling of 243412020 in words is "two hundred forty-three million, four hundred twelve thousand, twenty".