4721828 has 12 divisors (see below), whose sum is σ = 8281392. Its totient is φ = 2355720.

The previous prime is 4721819. The next prime is 4721839. The reversal of 4721828 is 8281274.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 4721794 and 4721803.

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 3 ways as a sum of consecutive naturals, for example, 1343 + ... + 3353.

It is an arithmetic number, because the mean of its divisors is an integer number (690116).

Almost surely, 2^4721828 is an apocalyptic number.

It is an amenable number.

4721828 is a deficient number, since it is larger than the sum of its proper divisors (3559564).

4721828 is a wasteful number, since it uses less digits than its factorization.

4721828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2602 (or 2600 counting only the distinct ones).

The product of its digits is 7168, while the sum is 32.

The square root of 4721828 is about 2172.9767601150. The cubic root of 4721828 is about 167.7657828394.

The spelling of 4721828 in words is "four million, seven hundred twenty-one thousand, eight hundred twenty-eight".