404512027920028 has 72 divisors (see below), whose sum is σ = 855009884675520. Its totient is φ = 166766632583040.

The previous prime is 404512027919981. The next prime is 404512027920029. The reversal of 404512027920028 is 820029720215404.

It is a self number, because there is not a number n which added to its sum of digits gives 404512027920028.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404512027920029) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 129763675 + ... + 132844402.

It is an arithmetic number, because the mean of its divisors is an integer number (11875137287160).

Almost surely, 2^{404512027920028} is an apocalyptic number.

It is an amenable number.

404512027920028 is an abundant number, since it is smaller than the sum of its proper divisors (450497856755492).

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

404512027920028 is a wasteful number, since it uses less digits than its factorization.

404512027920028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262608395 (or 262608386 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 46.

The spelling of 404512027920028 in words is "four hundred four trillion, five hundred twelve billion, twenty-seven million, nine hundred twenty thousand, twenty-eight".