4090728 has 16 divisors (see below), whose sum is σ = 10226880. Its totient is φ = 1363568.

The previous prime is 4090703. The next prime is 4090733. The reversal of 4090728 is 8270904.

It is a junction number, because it is equal to n+sod(n) for n = 4090695 and 4090704.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85200 + ... + 85247.

It is an arithmetic number, because the mean of its divisors is an integer number (639180).

Almost surely, 2^4090728 is an apocalyptic number.

It is an amenable number.

4090728 is an abundant number, since it is smaller than the sum of its proper divisors (6136152).

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

4090728 is a wasteful number, since it uses less digits than its factorization.

4090728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170456 (or 170452 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 4090728 is about 2022.5548200234. The cubic root of 4090728 is about 159.9313246940.

The spelling of 4090728 in words is "four million, ninety thousand, seven hundred twenty-eight".