4721730 has 32 divisors (see below), whose sum is σ = 12204864. Its totient is φ = 1162176.

The previous prime is 4721729. The next prime is 4721737. The reversal of 4721730 is 371274.

It is a d-powerful number, because it can be written as 4¹¹ + 7 + 2¹⁹ + 1 + 7⁴ + 3⁶ + 0 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 4721730.

It is not an unprimeable number, because it can be changed into a prime (4721737) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5664 + ... + 6443.

It is an arithmetic number, because the mean of its divisors is an integer number (381402).

Almost surely, 2^4721730 is an apocalyptic number.

4721730 is an abundant number, since it is smaller than the sum of its proper divisors (7483134).

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

4721730 is a wasteful number, since it uses less digits than its factorization.

4721730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12130.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 4721730 is about 2172.9542102861. The cubic root of 4721730 is about 167.7646221900.

The spelling of 4721730 in words is "four million, seven hundred twenty-one thousand, seven hundred thirty".