4401720 has 48 divisors (see below), whose sum is σ = 14306760. Its totient is φ = 1173696.

The previous prime is 4401701. The next prime is 4401737. The reversal of 4401720 is 271044.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 4401693 and 4401702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5754 + ... + 6473.

Almost surely, 2^4401720 is an apocalyptic number.

4401720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4401720 is an abundant number, since it is smaller than the sum of its proper divisors (9905040).

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

4401720 is a wasteful number, since it uses less digits than its factorization.

4401720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12244 (or 12237 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 4401720 is about 2098.0276451944. The cubic root of 4401720 is about 163.8856033474.

Adding to 4401720 its reverse (271044), we get a palindrome (4672764).

The spelling of 4401720 in words is "four million, four hundred one thousand, seven hundred twenty".