127828 has 6 divisors (see below), whose sum is σ = 223706. Its totient is φ = 63912.

The previous prime is 127819. The next prime is 127837. The reversal of 127828 is 828721.

It is an interprime number because it is at equal distance from previous prime (127819) and next prime (127837).

It can be written as a sum of positive squares in only one way, i.e., 121104 + 6724 = 348^2 + 82^2 .

It is a junction number, because it is equal to n+sod(n) for n = 127796 and 127805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15975 + ... + 15982.

2¹²⁷⁸²⁸ is an apocalyptic number.

It is an amenable number.

127828 is a deficient number, since it is larger than the sum of its proper divisors (95878).

127828 is a wasteful number, since it uses less digits than its factorization.

127828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31961 (or 31959 counting only the distinct ones).

The product of its digits is 1792, while the sum is 28.

The square root of 127828 is about 357.5304182863. The cubic root of 127828 is about 50.3742582917.

The spelling of 127828 in words is "one hundred twenty-seven thousand, eight hundred twenty-eight".