4004720 has 40 divisors (see below), whose sum is σ = 9414576. Its totient is φ = 1584128.

The previous prime is 4004717. The next prime is 4004731. The reversal of 4004720 is 274004.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8819 + ... + 9261.

Almost surely, 2^4004720 is an apocalyptic number.

4004720 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 4004720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4707288).

4004720 is an abundant number, since it is smaller than the sum of its proper divisors (5409856).

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

4004720 is a wasteful number, since it uses less digits than its factorization.

4004720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 569 (or 563 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 4004720 is about 2001.1796521052. The cubic root of 4004720 is about 158.8025184288.

Adding to 4004720 its reverse (274004), we get a palindrome (4278724).

The spelling of 4004720 in words is "four million, four thousand, seven hundred twenty".