5272128 has 98 divisors (see below), whose sum is σ = 15824454. Its totient is φ = 1741824.

The previous prime is 5272123. The next prime is 5272147. The reversal of 5272128 is 8212725.

It can be written as a sum of positive squares in only one way, i.e., 2985984 + 2286144 = 1728^2 + 1512^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (5272121) by changing a digit.

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 13 ways as a sum of consecutive naturals, for example, 46600 + ... + 46712.

Almost surely, 2^5272128 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 5272128, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7912227).

5272128 is an abundant number, since it is smaller than the sum of its proper divisors (10552326).

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

5272128 is an equidigital number, since it uses as much as digits as its factorization.

5272128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143 (or 118 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 5272128 is about 2296.1114955507. Note that the first 3 decimals coincide. The cubic root of 5272128 is about 174.0451725760.

The spelling of 5272128 in words is "five million, two hundred seventy-two thousand, one hundred twenty-eight".