204020040024 has 48 divisors (see below), whose sum is σ = 552664483800. Its totient is φ = 67993115904.

The previous prime is 204020040023. The next prime is 204020040053. The reversal of 204020040024 is 420040020402.

204020040024 is a `hidden beast` number, since 2 + 0 + 40 + 200 + 400 + 24 = 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 = 204020039979 and 204020040006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204020040023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 84192 + ... + 644304.

Almost surely, 2^204020040024 is an apocalyptic number.

204020040024 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

204020040024 is an abundant number, since it is smaller than the sum of its proper divisors (348644443776).

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

204020040024 is a wasteful number, since it uses less digits than its factorization.

204020040024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565184 (or 565177 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 204020040024 its reverse (420040020402), we get a palindrome (624060060426).

The spelling of 204020040024 in words is "two hundred four billion, twenty million, forty thousand, twenty-four".