4638744 has 48 divisors (see below), whose sum is σ = 13707720. Its totient is φ = 1405440.

The previous prime is 4638743. The next prime is 4638761. The reversal of 4638744 is 4478364.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 4638699 and 4638708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4638743) 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, 2137 + ... + 3720.

Almost surely, 2^4638744 is an apocalyptic number.

4638744 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

4638744 is an abundant number, since it is smaller than the sum of its proper divisors (9068976).

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

4638744 is a wasteful number, since it uses less digits than its factorization.

4638744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5880 (or 5873 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 4638744 is about 2153.7743614409. The cubic root of 4638744 is about 166.7759674155.

The spelling of 4638744 in words is "four million, six hundred thirty-eight thousand, seven hundred forty-four".