7522728 has 32 divisors (see below), whose sum is σ = 18886560. Its totient is φ = 2496960.

The previous prime is 7522643. The next prime is 7522741. The reversal of 7522728 is 8272257.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6858 + ... + 7878.

It is an arithmetic number, because the mean of its divisors is an integer number (590205).

Almost surely, 2^7522728 is an apocalyptic number.

It is an amenable number.

7522728 is an abundant number, since it is smaller than the sum of its proper divisors (11363832).

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

7522728 is a wasteful number, since it uses less digits than its factorization.

7522728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1337 (or 1333 counting only the distinct ones).

The product of its digits is 15680, while the sum is 33.

The square root of 7522728 is about 2742.7591946797. The cubic root of 7522728 is about 195.9409095785.

The spelling of 7522728 in words is "seven million, five hundred twenty-two thousand, seven hundred twenty-eight".