1267648 has 28 divisors (see below), whose sum is σ = 2606040. Its totient is φ = 611072.

The previous prime is 1267633. The next prime is 1267649. The reversal of 1267648 is 8467621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1267649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1515 + ... + 2197.

2^1267648 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1267648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1303020).

1267648 is an abundant number, since it is smaller than the sum of its proper divisors (1338392).

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

1267648 is an equidigital number, since it uses as much as digits as its factorization.

1267648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 714 counting only the distinct ones).

The product of its digits is 16128, while the sum is 34.

The square root of 1267648 is about 1125.8987521087. The cubic root of 1267648 is about 108.2263200981.

The spelling of 1267648 in words is "one million, two hundred sixty-seven thousand, six hundred forty-eight".