4728745 has 12 divisors (see below), whose sum is σ = 6601284. Its totient is φ = 3242400.

The previous prime is 4728743. The next prime is 4728749. The reversal of 4728745 is 5478274.

It can be written as a sum of positive squares in 2 ways, for example, as 2181529 + 2547216 = 1477^2 + 1596^2 .

It is not a de Polignac number, because 4728745 - 2¹ = 4728743 is a prime.

It is a super-2 number, since 2×4728745² = 44722058550050, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4728743) 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, 9406 + ... + 9895.

It is an arithmetic number, because the mean of its divisors is an integer number (550107).

Almost surely, 2^4728745 is an apocalyptic number.

It is an amenable number.

4728745 is a deficient number, since it is larger than the sum of its proper divisors (1872539).

4728745 is a wasteful number, since it uses less digits than its factorization.

4728745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19320 (or 19313 counting only the distinct ones).

The product of its digits is 62720, while the sum is 37.

The square root of 4728745 is about 2174.5677731448. The cubic root of 4728745 is about 167.8476628331.

The spelling of 4728745 in words is "four million, seven hundred twenty-eight thousand, seven hundred forty-five".