1244816 has 10 divisors (see below), whose sum is σ = 2411862. Its totient is φ = 622400.

The previous prime is 1244813. The next prime is 1244819. The reversal of 1244816 is 6184421.

It is an interprime number because it is at equal distance from previous prime (1244813) and next prime (1244819).

It can be written as a sum of positive squares in only one way, i.e., 1081600 + 163216 = 1040^2 + 404^2 .

It is not an unprimeable number, because it can be changed into a prime (1244813) by changing a digit.

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 as a sum of consecutive naturals, namely, 38885 + ... + 38916.

2^1244816 is an apocalyptic number.

1244816 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1244816 is a deficient number, since it is larger than the sum of its proper divisors (1167046).

1244816 is an equidigital number, since it uses as much as digits as its factorization.

1244816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77809 (or 77803 counting only the distinct ones).

The product of its digits is 1536, while the sum is 26.

The square root of 1244816 is about 1115.7132248029. The cubic root of 1244816 is about 107.5726136408.

The spelling of 1244816 in words is "one million, two hundred forty-four thousand, eight hundred sixteen".