4721720 has 16 divisors (see below), whose sum is σ = 10623960. Its totient is φ = 1888672.

The previous prime is 4721719. The next prime is 4721723. The reversal of 4721720 is 271274.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4721723) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 58982 + ... + 59061.

Almost surely, 2^4721720 is an apocalyptic number.

4721720 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4721720 is an abundant number, since it is smaller than the sum of its proper divisors (5902240).

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

4721720 is a wasteful number, since it uses less digits than its factorization.

4721720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118054 (or 118050 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 4721720 is about 2172.9519092700. The cubic root of 4721720 is about 167.7645037555.

Adding to 4721720 its reverse (271274), we get a palindrome (4992994).

The spelling of 4721720 in words is "four million, seven hundred twenty-one thousand, seven hundred twenty".