4728791 has 4 divisors (see below), whose sum is σ = 4809000. Its totient is φ = 4648584.

The previous prime is 4728767. The next prime is 4728797. The reversal of 4728791 is 1978274.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4728791 is a prime.

It is a super-2 number, since 2×4728791² = 44722928643362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4728797) 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, 40016 + ... + 40133.

It is an arithmetic number, because the mean of its divisors is an integer number (1202250).

Almost surely, 2^4728791 is an apocalyptic number.

4728791 is a deficient number, since it is larger than the sum of its proper divisors (80209).

4728791 is an equidigital number, since it uses as much as digits as its factorization.

4728791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80208.

The product of its digits is 28224, while the sum is 38.

The square root of 4728791 is about 2174.5783499336. The cubic root of 4728791 is about 167.8482070908.

The spelling of 4728791 in words is "four million, seven hundred twenty-eight thousand, seven hundred ninety-one".