1267216 has 10 divisors (see below), whose sum is σ = 2455262. Its totient is φ = 633600.

The previous prime is 1267199. The next prime is 1267223. The reversal of 1267216 is 6127621.

1267216 = 64² + 65² + ... + 159².

It can be written as a sum of positive squares in only one way, i.e., 1218816 + 48400 = 1104^2 + 220^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39585 + ... + 39616.

2^1267216 is an apocalyptic number.

1267216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1267216 is a deficient number, since it is larger than the sum of its proper divisors (1188046).

1267216 is an equidigital number, since it uses as much as digits as its factorization.

1267216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79209 (or 79203 counting only the distinct ones).

The product of its digits is 1008, while the sum is 25.

The square root of 1267216 is about 1125.7068890257. The cubic root of 1267216 is about 108.2140246022.

The spelling of 1267216 in words is "one million, two hundred sixty-seven thousand, two hundred sixteen".