4638172 has 54 divisors (see below), whose sum is σ = 10479336. Its totient is φ = 1758240.

The previous prime is 4638149. The next prime is 4638181. The reversal of 4638172 is 2718364.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 125338 + ... + 125374.

Almost surely, 2^4638172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4638172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5239668).

4638172 is an abundant number, since it is smaller than the sum of its proper divisors (5841164).

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

4638172 is a wasteful number, since it uses less digits than its factorization.

4638172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107 (or 57 counting only the distinct ones).

The product of its digits is 8064, while the sum is 31.

The square root of 4638172 is about 2153.6415672066. The cubic root of 4638172 is about 166.7691121278.

The spelling of 4638172 in words is "four million, six hundred thirty-eight thousand, one hundred seventy-two".