4723638 has 16 divisors (see below), whose sum is σ = 9523200. Its totient is φ = 1561896.

The previous prime is 4723633. The next prime is 4723661. The reversal of 4723638 is 8363274.

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 = 4723599 and 4723608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4723633) 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, 2338 + ... + 3861.

It is an arithmetic number, because the mean of its divisors is an integer number (595200).

Almost surely, 2^4723638 is an apocalyptic number.

4723638 is an abundant number, since it is smaller than the sum of its proper divisors (4799562).

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

4723638 is a wasteful number, since it uses less digits than its factorization.

4723638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6331.

The product of its digits is 24192, while the sum is 33.

The square root of 4723638 is about 2173.3931995845. The cubic root of 4723638 is about 167.7872164364.

It can be divided in two parts, 47236 and 38, that added together give a palindrome (47274).

The spelling of 4723638 in words is "four million, seven hundred twenty-three thousand, six hundred thirty-eight".