204024002440 has 32 divisors (see below), whose sum is σ = 467715406680. Its totient is φ = 80069796352.

The previous prime is 204024002437. The next prime is 204024002447. The reversal of 204024002440 is 44200420402.

It can be written as a sum of positive squares in 4 ways, for example, as 178934076036 + 25089926404 = 423006^2 + 158398^2 .

It is not an unprimeable number, because it can be changed into a prime (204024002447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48116749 + ... + 48120988.

Almost surely, 2^204024002440 is an apocalyptic number.

204024002440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204024002440 is an abundant number, since it is smaller than the sum of its proper divisors (263691404240).

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

204024002440 is a wasteful number, since it uses less digits than its factorization.

204024002440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96237801 (or 96237797 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 22.

Adding to 204024002440 its reverse (44200420402), we get a palindrome (248224422842).

The spelling of 204024002440 in words is "two hundred four billion, twenty-four million, two thousand, four hundred forty".