7552728 has 48 divisors (see below), whose sum is σ = 21535800. Its totient is φ = 2384640.

The previous prime is 7552723. The next prime is 7552729. The reversal of 7552728 is 8272557.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 7552692 and 7552701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7552723) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1393 + ... + 4128.

Almost surely, 2^7552728 is an apocalyptic number.

It is an amenable number.

7552728 is an abundant number, since it is smaller than the sum of its proper divisors (13983072).

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

7552728 is a wasteful number, since it uses less digits than its factorization.

7552728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5552 (or 5545 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The square root of 7552728 is about 2748.2226983998. Note that the first 3 decimals coincide. The cubic root of 7552728 is about 196.2010293381.

The spelling of 7552728 in words is "seven million, five hundred fifty-two thousand, seven hundred twenty-eight".