5129728 has 40 divisors (see below), whose sum is σ = 10532808. Its totient is φ = 2494464.

The previous prime is 5129681. The next prime is 5129731. The reversal of 5129728 is 8279215.

It is a junction number, because it is equal to n+sod(n) for n = 5129693 and 5129702.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21900 + ... + 22132.

Almost surely, 2^5129728 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 5129728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5266404).

5129728 is an abundant number, since it is smaller than the sum of its proper divisors (5403080).

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

5129728 is an equidigital number, since it uses as much as digits as its factorization.

5129728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 294 (or 278 counting only the distinct ones).

The product of its digits is 10080, while the sum is 34.

The square root of 5129728 is about 2264.8902843184. The cubic root of 5129728 is about 172.4638641663.

The spelling of 5129728 in words is "five million, one hundred twenty-nine thousand, seven hundred twenty-eight".