4290728 has 16 divisors (see below), whose sum is σ = 8664180. Its totient is φ = 1980288.

The previous prime is 4290701. The next prime is 4290757. The reversal of 4290728 is 8270924.

It can be written as a sum of positive squares in 2 ways, for example, as 3928324 + 362404 = 1982^2 + 602^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4290694 and 4290703.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20525 + ... + 20732.

Almost surely, 2^4290728 is an apocalyptic number.

It is an amenable number.

4290728 is an abundant number, since it is smaller than the sum of its proper divisors (4373452).

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

4290728 is a wasteful number, since it uses less digits than its factorization.

4290728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41276 (or 41272 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 4290728 is about 2071.4072511218. The cubic root of 4290728 is about 162.4963691496.

The spelling of 4290728 in words is "four million, two hundred ninety thousand, seven hundred twenty-eight".