4394128752 has 120 divisors (see below), whose sum is σ = 13566662928. Its totient is φ = 1319040000.

The previous prime is 4394128723. The next prime is 4394128847. The reversal of 4394128752 is 2578214934.

It is a junction number, because it is equal to n+sod(n) for n = 4394128698 and 4394128707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48127 + ... + 105377.

Almost surely, 2^4394128752 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 4394128752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6783331464).

4394128752 is an abundant number, since it is smaller than the sum of its proper divisors (9172534176).

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

4394128752 is a wasteful number, since it uses less digits than its factorization.

4394128752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57319 (or 57310 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 4394128752 is about 66288.2248366933. The cubic root of 4394128752 is about 1637.9133624739.

The spelling of 4394128752 in words is "four billion, three hundred ninety-four million, one hundred twenty-eight thousand, seven hundred fifty-two".