1272680 has 16 divisors (see below), whose sum is σ = 2863620. Its totient is φ = 509056.

The previous prime is 1272679. The next prime is 1272749. The reversal of 1272680 is 862721.

It can be written as a sum of positive squares in 2 ways, for example, as 1240996 + 31684 = 1114^2 + 178^2 .

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 15869 + ... + 15948.

2^1272680 is an apocalyptic number.

1272680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1272680 is an abundant number, since it is smaller than the sum of its proper divisors (1590940).

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

1272680 is a wasteful number, since it uses less digits than its factorization.

1272680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31828 (or 31824 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 1272680 is about 1128.1311980439. The cubic root of 1272680 is about 108.3693345174.

The spelling of 1272680 in words is "one million, two hundred seventy-two thousand, six hundred eighty".