8404012656 has 160 divisors (see below), whose sum is σ = 26184990720. Its totient is φ = 2565271296.

The previous prime is 8404012637. The next prime is 8404012691. The reversal of 8404012656 is 6562104048.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 8404012656.

It is a congruent number.

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, 707341 + ... + 719123.

It is an arithmetic number, because the mean of its divisors is an integer number (163656192).

Almost surely, 2^8404012656 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 8404012656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13092495360).

8404012656 is an abundant number, since it is smaller than the sum of its proper divisors (17780978064).

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

8404012656 is a wasteful number, since it uses less digits than its factorization.

8404012656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11940 (or 11928 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 8404012656 is about 91673.4021186080. The cubic root of 8404012656 is about 2033.1163485258.

The spelling of 8404012656 in words is "eight billion, four hundred four million, twelve thousand, six hundred fifty-six".