1268216 has 8 divisors (see below), whose sum is σ = 2377920. Its totient is φ = 634104.

The previous prime is 1268213. The next prime is 1268221. The reversal of 1268216 is 6128621.

1268216 = 274² + 275² + ... + 289².

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79256 + ... + 79271.

It is an arithmetic number, because the mean of its divisors is an integer number (297240).

2^1268216 is an apocalyptic number.

It is an amenable number.

1268216 is a deficient number, since it is larger than the sum of its proper divisors (1109704).

1268216 is a wasteful number, since it uses less digits than its factorization.

1268216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158533 (or 158529 counting only the distinct ones).

The product of its digits is 1152, while the sum is 26.

The square root of 1268216 is about 1126.1509667891. The cubic root of 1268216 is about 108.2424821480.

The spelling of 1268216 in words is "one million, two hundred sixty-eight thousand, two hundred sixteen".