146728 has 8 divisors (see below), whose sum is σ = 275130. Its totient is φ = 73360.

The previous prime is 146719. The next prime is 146743. The reversal of 146728 is 827641.

It can be written as a sum of positive squares in only one way, i.e., 142884 + 3844 = 378^2 + 62^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 146696 and 146705.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9163 + ... + 9178.

2¹⁴⁶⁷²⁸ is an apocalyptic number.

It is an amenable number.

146728 is a deficient number, since it is larger than the sum of its proper divisors (128402).

146728 is a wasteful number, since it uses less digits than its factorization.

146728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18347 (or 18343 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 146728 is about 383.0509104545. The cubic root of 146728 is about 52.7437493997.

The spelling of 146728 in words is "one hundred forty-six thousand, seven hundred twenty-eight".