4727638 has 16 divisors (see below), whose sum is σ = 7537680. Its totient is φ = 2219616.

The previous prime is 4727633. The next prime is 4727641. The reversal of 4727638 is 8367274.

It is a super-2 number, since 2×4727638² = 44701122118088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 4727597 and 4727606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4727633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1045 + ... + 3247.

It is an arithmetic number, because the mean of its divisors is an integer number (471105).

Almost surely, 2^4727638 is an apocalyptic number.

4727638 is a deficient number, since it is larger than the sum of its proper divisors (2810042).

4727638 is a wasteful number, since it uses less digits than its factorization.

4727638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2271.

The product of its digits is 56448, while the sum is 37.

The square root of 4727638 is about 2174.3132249057. The cubic root of 4727638 is about 167.8345640889.

The spelling of 4727638 in words is "four million, seven hundred twenty-seven thousand, six hundred thirty-eight".