4721424 has 80 divisors (see below), whose sum is σ = 13332480. Its totient is φ = 1434240.

The previous prime is 4721419. The next prime is 4721441. The reversal of 4721424 is 4241274.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 4721394 and 4721403.

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, 28189 + ... + 28355.

It is an arithmetic number, because the mean of its divisors is an integer number (166656).

Almost surely, 2^4721424 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 4721424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6666240).

4721424 is an abundant number, since it is smaller than the sum of its proper divisors (8611056).

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

4721424 is a wasteful number, since it uses less digits than its factorization.

4721424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228 (or 222 counting only the distinct ones).

The product of its digits is 1792, while the sum is 24.

The square root of 4721424 is about 2172.8837980895. The cubic root of 4721424 is about 167.7609980181.

Adding to 4721424 its reverse (4241274), we get a palindrome (8962698).

The spelling of 4721424 in words is "four million, seven hundred twenty-one thousand, four hundred twenty-four".