243214020 has 216 divisors, whose sum is σ = 875818944. Its totient is φ = 53488512.

The previous prime is 243213991. The next prime is 243214043. The reversal of 243214020 is 20412342.

243214020 is a `hidden beast` number, since 243 + 21 + 402 + 0 = 666.

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 = 243213984 and 243214002.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3630027 + ... + 3630093.

Almost surely, 2^243214020 is an apocalyptic number.

243214020 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 243214020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (437909472).

243214020 is an abundant number, since it is smaller than the sum of its proper divisors (632604924).

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

243214020 is a wasteful number, since it uses less digits than its factorization.

243214020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 127 counting only the distinct ones).

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

The square root of 243214020 is about 15595.3204519817. The cubic root of 243214020 is about 624.2082946143.

Adding to 243214020 its reverse (20412342), we get a palindrome (263626362).

The spelling of 243214020 in words is "two hundred forty-three million, two hundred fourteen thousand, twenty".