7485728 has 24 divisors (see below), whose sum is σ = 14798700. Its totient is φ = 3727360.

The previous prime is 7485727. The next prime is 7485749. The reversal of 7485728 is 8275847.

It can be written as a sum of positive squares in 2 ways, for example, as 7463824 + 21904 = 2732^2 + 148^2 .

It is a super-2 number, since 2×7485728² = 112072247379968, which contains 22 as substring.

Its product of digits (125440) is a multiple of the sum of its prime factors (980).

It is not an unprimeable number, because it can be changed into a prime (7485721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14108 + ... + 14628.

Almost surely, 2^7485728 is an apocalyptic number.

It is an amenable number.

7485728 is a deficient number, since it is larger than the sum of its proper divisors (7312972).

7485728 is a wasteful number, since it uses less digits than its factorization.

7485728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980 (or 972 counting only the distinct ones).

The product of its digits is 125440, while the sum is 41.

The square root of 7485728 is about 2736.0058479470. The cubic root of 7485728 is about 195.6191410154.

The spelling of 7485728 in words is "seven million, four hundred eighty-five thousand, seven hundred twenty-eight".