404220544315240 has 128 divisors (see below), whose sum is σ = 933156577267200. Its totient is φ = 157533878211840.

The previous prime is 404220544315157. The next prime is 404220544315283. The reversal of 404220544315240 is 42513445022404.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 404220544315193 and 404220544315202.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242478247 + ... + 244139593.

It is an arithmetic number, because the mean of its divisors is an integer number (7290285759900).

Almost surely, 2^{404220544315240} is an apocalyptic number.

404220544315240 is a gapful number since it is divisible by the number (40) 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 404220544315240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (466578288633600).

404220544315240 is an abundant number, since it is smaller than the sum of its proper divisors (528936032951960).

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

404220544315240 is a wasteful number, since it uses less digits than its factorization.

404220544315240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662335 (or 1662331 counting only the distinct ones).

The product of its (nonzero) digits is 614400, while the sum is 40.

Adding to 404220544315240 its reverse (42513445022404), we get a palindrome (446733989337644).

The spelling of 404220544315240 in words is "four hundred four trillion, two hundred twenty billion, five hundred forty-four million, three hundred fifteen thousand, two hundred forty".