5128390746 has 80 divisors (see below), whose sum is σ = 11649860640. Its totient is φ = 1686031200.

The previous prime is 5128390649. The next prime is 5128390747. The reversal of 5128390746 is 6470938215.

5128390746 is a `hidden beast` number, since 512 + 8 + 3 + 90 + 7 + 46 = 666.

5128390746 is digitally balanced in base 10, because in such base it contains all the possibile digits an equal number of times.

5128390746 is strictly pandigital in base 10.

It is not an unprimeable number, because it can be changed into a prime (5128390747) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6200785 + ... + 6201611.

It is an arithmetic number, because the mean of its divisors is an integer number (145623258).

It is a 1-persistent number, because it is pandigital, but 2⋅5128390746 = 10256781492 is not.

Almost surely, 2^5128390746 is an apocalyptic number.

5128390746 is the 38279-th nonagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5128390746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5824930320).

5128390746 is an abundant number, since it is smaller than the sum of its proper divisors (6521469894).

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

5128390746 is a wasteful number, since it uses less digits than its factorization.

5128390746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1321 (or 1312 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The square root of 5128390746 is about 71612.7833979381. The cubic root of 5128390746 is about 1724.4887649473.

The spelling of 5128390746 in words is "five billion, one hundred twenty-eight million, three hundred ninety thousand, seven hundred forty-six".