1257028 has 6 divisors (see below), whose sum is σ = 2199806. Its totient is φ = 628512.

The previous prime is 1257017. The next prime is 1257029. The reversal of 1257028 is 8207521.

It can be written as a sum of positive squares in only one way, i.e., 887364 + 369664 = 942^2 + 608^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1256993 and 1257011.

It is not an unprimeable number, because it can be changed into a prime (1257029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 157125 + ... + 157132.

2^1257028 is an apocalyptic number.

It is an amenable number.

1257028 is a deficient number, since it is larger than the sum of its proper divisors (942778).

1257028 is a wasteful number, since it uses less digits than its factorization.

1257028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314261 (or 314259 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 1257028 is about 1121.1726004501. The cubic root of 1257028 is about 107.9232422132.

The spelling of 1257028 in words is "one million, two hundred fifty-seven thousand, twenty-eight".