404320056100 has 36 divisors (see below), whose sum is σ = 907628822100. Its totient is φ = 156151192960.

The previous prime is 404320056089. The next prime is 404320056109. The reversal of 404320056100 is 1650023404.

It can be written as a sum of positive squares in 6 ways, for example, as 5292853504 + 399027202596 = 72752^2 + 631686^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (404320056109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69707455 + ... + 69713254.

It is an arithmetic number, because the mean of its divisors is an integer number (25211911725).

Almost surely, 2^404320056100 is an apocalyptic number.

It is an amenable number.

404320056100 is an abundant number, since it is smaller than the sum of its proper divisors (503308766000).

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

404320056100 is a wasteful number, since it uses less digits than its factorization.

404320056100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139420752 (or 139420745 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

Adding to 404320056100 its reverse (1650023404), we get a palindrome (405970079504).

The spelling of 404320056100 in words is "four hundred four billion, three hundred twenty million, fifty-six thousand, one hundred".