4721620 has 24 divisors (see below), whose sum is σ = 10128384. Its totient is φ = 1848096.

The previous prime is 4721617. The next prime is 4721627. The reversal of 4721620 is 261274.

It is a junction number, because it is equal to n+sod(n) for n = 4721591 and 4721600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4721627) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1572 + ... + 3451.

It is an arithmetic number, because the mean of its divisors is an integer number (422016).

Almost surely, 2^4721620 is an apocalyptic number.

It is an amenable number.

4721620 is an abundant number, since it is smaller than the sum of its proper divisors (5406764).

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

4721620 is a wasteful number, since it uses less digits than its factorization.

4721620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5079 (or 5077 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 4721620 is about 2172.9288989748. The cubic root of 4721620 is about 167.7633194012.

Adding to 4721620 its reverse (261274), we get a palindrome (4982894).

The spelling of 4721620 in words is "four million, seven hundred twenty-one thousand, six hundred twenty".