1239828 has 12 divisors (see below), whose sum is σ = 2892960. Its totient is φ = 413272.

The previous prime is 1239817. The next prime is 1239839. The reversal of 1239828 is 8289321.

It is an interprime number because it is at equal distance from previous prime (1239817) and next prime (1239839).

It is a tau number, because it is divible by the number of its divisors (12).

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, 51648 + ... + 51671.

It is an arithmetic number, because the mean of its divisors is an integer number (241080).

2^1239828 is an apocalyptic number.

It is an amenable number.

1239828 is an abundant number, since it is smaller than the sum of its proper divisors (1653132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1239828 is a wasteful number, since it uses less digits than its factorization.

1239828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103326 (or 103324 counting only the distinct ones).

The product of its digits is 6912, while the sum is 33.

The square root of 1239828 is about 1113.4756396078. The cubic root of 1239828 is about 107.4287395043.

The spelling of 1239828 in words is "one million, two hundred thirty-nine thousand, eight hundred twenty-eight".