7321404456 has 32 divisors (see below), whose sum is σ = 20337235200. Its totient is φ = 2440468080.

The previous prime is 7321404449. The next prime is 7321404457. The reversal of 7321404456 is 6544041237.

7321404456 is a `hidden beast` number, since 73 + 2 + 140 + 445 + 6 = 666.

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 7321404456.

It is not an unprimeable number, because it can be changed into a prime (7321404457) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16947480 + ... + 16947911.

It is an arithmetic number, because the mean of its divisors is an integer number (635538600).

Almost surely, 2^7321404456 is an apocalyptic number.

It is an amenable number.

7321404456 is an abundant number, since it is smaller than the sum of its proper divisors (13015830744).

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

7321404456 is a wasteful number, since it uses less digits than its factorization.

7321404456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33895406 (or 33895396 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 36.

The square root of 7321404456 is about 85565.2058724807. The cubic root of 7321404456 is about 1941.7715471952.

The spelling of 7321404456 in words is "seven billion, three hundred twenty-one million, four hundred four thousand, four hundred fifty-six".