1244808 has 80 divisors (see below), whose sum is σ = 3724380. Its totient is φ = 387072.

The previous prime is 1244797. The next prime is 1244813. The reversal of 1244808 is 8084421.

It can be written as a sum of positive squares in 2 ways, for example, as 1205604 + 39204 = 1098^2 + 198^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 10960 + ... + 11072.

2^1244808 is an apocalyptic number.

1244808 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1244808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1862190).

1244808 is an abundant number, since it is smaller than the sum of its proper divisors (2479572).

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

1244808 is a wasteful number, since it uses less digits than its factorization.

1244808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 135 counting only the distinct ones).

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

The square root of 1244808 is about 1115.7096396464. The cubic root of 1244808 is about 107.5723831963.

The spelling of 1244808 in words is "one million, two hundred forty-four thousand, eight hundred eight".