5128408740 has 384 divisors, whose sum is σ = 18713640960. Its totient is φ = 1020211200.

The previous prime is 5128408697. The next prime is 5128408759. The reversal of 5128408740 is 478048215.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6939291 + ... + 6940029.

It is an arithmetic number, because the mean of its divisors is an integer number (48733440).

Almost surely, 2^5128408740 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 5128408740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9356820480).

5128408740 is an abundant number, since it is smaller than the sum of its proper divisors (13585232220).

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

5128408740 is a wasteful number, since it uses less digits than its factorization.

5128408740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843 (or 841 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 39.

The square root of 5128408740 is about 71612.9090318219. The cubic root of 5128408740 is about 1724.4907818513.

The spelling of 5128408740 in words is "five billion, one hundred twenty-eight million, four hundred eight thousand, seven hundred forty".