405004104 has 64 divisors (see below), whose sum is σ = 1128816000. Its totient is φ = 134544960.

The previous prime is 405004081. The next prime is 405004121. The reversal of 405004104 is 401400504.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64162 + ... + 70190.

It is an arithmetic number, because the mean of its divisors is an integer number (17637750).

Almost surely, 2^405004104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 405004104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (564408000).

405004104 is an abundant number, since it is smaller than the sum of its proper divisors (723811896).

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

405004104 is a wasteful number, since it uses less digits than its factorization.

405004104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6355 (or 6345 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 405004104 is about 20124.7137619396. The cubic root of 405004104 is about 739.8661213856.

Adding to 405004104 its reverse (401400504), we get a palindrome (806404608).

The spelling of 405004104 in words is "four hundred five million, four thousand, one hundred four".