4030720 has 72 divisors (see below), whose sum is σ = 10007424. Its totient is φ = 1554432.

The previous prime is 4030709. The next prime is 4030757. The reversal of 4030720 is 270304.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a junction number, because it is equal to n+sod(n) for n = 4030694 and 4030703.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60127 + ... + 60193.

It is an arithmetic number, because the mean of its divisors is an integer number (138992).

Almost surely, 2^4030720 is an apocalyptic number.

4030720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4030720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5003712).

4030720 is an abundant number, since it is smaller than the sum of its proper divisors (5976704).

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

4030720 is an equidigital number, since it uses as much as digits as its factorization.

4030720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 16.

The square root of 4030720 is about 2007.6653107528. The cubic root of 4030720 is about 159.1454439631.

The spelling of 4030720 in words is "four million, thirty thousand, seven hundred twenty".