1240828 has 12 divisors (see below), whose sum is σ = 2184840. Its totient is φ = 616592.

The previous prime is 1240817. The next prime is 1240831. The reversal of 1240828 is 8280421.

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, 151 + ... + 1582.

It is an arithmetic number, because the mean of its divisors is an integer number (182070).

2^1240828 is an apocalyptic number.

It is an amenable number.

1240828 is a deficient number, since it is larger than the sum of its proper divisors (944012).

1240828 is a wasteful number, since it uses less digits than its factorization.

1240828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916 (or 1914 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 25.

The square root of 1240828 is about 1113.9245934981. The cubic root of 1240828 is about 107.4576144422.

The spelling of 1240828 in words is "one million, two hundred forty thousand, eight hundred twenty-eight".