4731220 has 48 divisors (see below), whose sum is σ = 11063808. Its totient is φ = 1687680.

The previous prime is 4731211. The next prime is 4731239. The reversal of 4731220 is 221374.

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7767 + ... + 8353.

It is an arithmetic number, because the mean of its divisors is an integer number (230496).

Almost surely, 2^4731220 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 4731220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5531904).

4731220 is an abundant number, since it is smaller than the sum of its proper divisors (6332588).

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

4731220 is a wasteful number, since it uses less digits than its factorization.

4731220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 19.

The square root of 4731220 is about 2175.1367773085. The cubic root of 4731220 is about 167.8769412505.

Adding to 4731220 its reverse (221374), we get a palindrome (4952594).

The spelling of 4731220 in words is "four million, seven hundred thirty-one thousand, two hundred twenty".