243623020 has 48 divisors (see below), whose sum is σ = 522341568. Its totient is φ = 95420160.

The previous prime is 243622961. The next prime is 243623027. The reversal of 243623020 is 20326342.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 243622982 and 243623000.

It is not an unprimeable number, because it can be changed into a prime (243623027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 484089 + ... + 484591.

It is an arithmetic number, because the mean of its divisors is an integer number (10882116).

Almost surely, 2^243623020 is an apocalyptic number.

243623020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

243623020 is an abundant number, since it is smaller than the sum of its proper divisors (278718548).

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

243623020 is a wasteful number, since it uses less digits than its factorization.

243623020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970 (or 968 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 243623020 is about 15608.4278516448. The cubic root of 243623020 is about 624.5579978883.

Adding to 243623020 its reverse (20326342), we get a palindrome (263949362).

The spelling of 243623020 in words is "two hundred forty-three million, six hundred twenty-three thousand, twenty".