1272768 has 56 divisors (see below), whose sum is σ = 3852672. Its totient is φ = 363264.

The previous prime is 1272749. The next prime is 1272811. The reversal of 1272768 is 8672721.

It is a tau number, because it is divible by the number of its divisors (56).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 871 + ... + 1817.

2^1272768 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 1272768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1926336).

1272768 is an abundant number, since it is smaller than the sum of its proper divisors (2579904).

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

1272768 is an equidigital number, since it uses as much as digits as its factorization.

1272768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969 (or 959 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 1272768 is about 1128.1701999255. The cubic root of 1272768 is about 108.3718322077.

The spelling of 1272768 in words is "one million, two hundred seventy-two thousand, seven hundred sixty-eight".