6320731428 has 96 divisors (see below), whose sum is σ = 18170087040. Its totient is φ = 1883952000.

The previous prime is 6320731369. The next prime is 6320731441. The reversal of 6320731428 is 8241370236.

It is a happy number.

6320731428 is a `hidden beast` number, since 632 + 0 + 7 + 3 + 14 + 2 + 8 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 6320731392 and 6320731401.

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, 28858 + ... + 116078.

It is an arithmetic number, because the mean of its divisors is an integer number (189271740).

Almost surely, 2^6320731428 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 6320731428, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9085043520).

6320731428 is an abundant number, since it is smaller than the sum of its proper divisors (11849355612).

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

6320731428 is a wasteful number, since it uses less digits than its factorization.

6320731428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87306 (or 87298 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 6320731428 is about 79503.0277913992. The cubic root of 6320731428 is about 1848.9384148577.

The spelling of 6320731428 in words is "six billion, three hundred twenty million, seven hundred thirty-one thousand, four hundred twenty-eight".