4721928 has 32 divisors (see below), whose sum is σ = 11880960. Its totient is φ = 1563840.

The previous prime is 4721911. The next prime is 4721933. The reversal of 4721928 is 8291274.

It is a happy number.

It is a Cunningham number, because it is equal to 2173²-1.

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, 3801 + ... + 4887.

It is an arithmetic number, because the mean of its divisors is an integer number (371280).

Almost surely, 2^4721928 is an apocalyptic number.

It is an amenable number.

4721928 is an abundant number, since it is smaller than the sum of its proper divisors (7159032).

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

4721928 is a wasteful number, since it uses less digits than its factorization.

4721928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277 (or 1273 counting only the distinct ones).

The product of its digits is 8064, while the sum is 33.

The square root of 4721928 is about 2172.9997699033. Note that the first 3 decimals coincide. The cubic root of 4721928 is about 167.7669671590.

The spelling of 4721928 in words is "four million, seven hundred twenty-one thousand, nine hundred twenty-eight".