4591872 has 54 divisors (see below), whose sum is σ = 13246142. Its totient is φ = 1529856.

The previous prime is 4591871. The next prime is 4591891. The reversal of 4591872 is 2781954.

It can be written as a sum of positive squares in only one way, i.e., 4260096 + 331776 = 2064^2 + 576^2 .

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

It is not an unprimeable number, because it can be changed into a prime (4591871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1308 + ... + 3300.

Almost surely, 2^4591872 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 4591872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6623071).

4591872 is an abundant number, since it is smaller than the sum of its proper divisors (8654270).

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

4591872 is a wasteful number, since it uses less digits than its factorization.

4591872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015 (or 1998 counting only the distinct ones).

The product of its digits is 20160, while the sum is 36.

The square root of 4591872 is about 2142.8653714128. The cubic root of 4591872 is about 166.2123377479.

The spelling of 4591872 in words is "four million, five hundred ninety-one thousand, eight hundred seventy-two".