1248840 has 48 divisors (see below), whose sum is σ = 4059900. Its totient is φ = 332928.

The previous prime is 1248833. The next prime is 1248847. The reversal of 1248840 is 488421.

It is an interprime number because it is at equal distance from previous prime (1248833) and next prime (1248847).

It can be written as a sum of positive squares in 2 ways, for example, as 1077444 + 171396 = 1038^2 + 414^2 .

It is a super-3 number, since 3×1248840³ = 5843077633317312000, which contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1248847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1375 + ... + 2094.

2^1248840 is an apocalyptic number.

1248840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1248840 is an abundant number, since it is smaller than the sum of its proper divisors (2811060).

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

1248840 is a wasteful number, since it uses less digits than its factorization.

1248840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3486 (or 3479 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 1248840 is about 1117.5151005691. The cubic root of 1248840 is about 107.6884022655.

The spelling of 1248840 in words is "one million, two hundred forty-eight thousand, eight hundred forty".