1243828 has 12 divisors (see below), whose sum is σ = 2198560. Its totient is φ = 615672.

The previous prime is 1243819. The next prime is 1243841. The reversal of 1243828 is 8283421.

It is a junction number, because it is equal to n+sod(n) for n = 1243796 and 1243805.

It is a congruent number.

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, 1098 + ... + 1921.

2^1243828 is an apocalyptic number.

It is an amenable number.

1243828 is a deficient number, since it is larger than the sum of its proper divisors (954732).

1243828 is a wasteful number, since it uses less digits than its factorization.

1243828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3126 (or 3124 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 1243828 is about 1115.2703708070. The cubic root of 1243828 is about 107.5441462815.

The spelling of 1243828 in words is "one million, two hundred forty-three thousand, eight hundred twenty-eight".