404215020402 has 32 divisors (see below), whose sum is σ = 863680185600. Its totient is φ = 125741669328.

The previous prime is 404215020379. The next prime is 404215020427. The reversal of 404215020402 is 204020512404.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26453152 + ... + 26468427.

It is an arithmetic number, because the mean of its divisors is an integer number (26990005800).

Almost surely, 2^404215020402 is an apocalyptic number.

404215020402 is an abundant number, since it is smaller than the sum of its proper divisors (459465165198).

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

404215020402 is a wasteful number, since it uses less digits than its factorization.

404215020402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52921670.

The product of its (nonzero) digits is 2560, while the sum is 24.

Adding to 404215020402 its reverse (204020512404), we get a palindrome (608235532806).

The spelling of 404215020402 in words is "four hundred four billion, two hundred fifteen million, twenty thousand, four hundred two".