649028 has 6 divisors (see below), whose sum is σ = 1135806. Its totient is φ = 324512.

The previous prime is 649007. The next prime is 649039. The reversal of 649028 is 820946.

649028 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 386884 + 262144 = 622^2 + 512^2 .

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 649028.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81125 + ... + 81132.

It is an arithmetic number, because the mean of its divisors is an integer number (189301).

2⁶⁴⁹⁰²⁸ is an apocalyptic number.

It is an amenable number.

649028 is a deficient number, since it is larger than the sum of its proper divisors (486778).

649028 is a wasteful number, since it uses less digits than its factorization.

649028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162261 (or 162259 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 649028 is about 805.6227404933. The cubic root of 649028 is about 86.5807103056.

The spelling of 649028 in words is "six hundred forty-nine thousand, twenty-eight".