1272660 has 24 divisors (see below), whose sum is σ = 3563616. Its totient is φ = 339360.

The previous prime is 1272653. The next prime is 1272673. The reversal of 1272660 is 662721.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1272660.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 10546 + ... + 10665.

It is an arithmetic number, because the mean of its divisors is an integer number (148484).

2^1272660 is an apocalyptic number.

1272660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1272660 is an abundant number, since it is smaller than the sum of its proper divisors (2290956).

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

1272660 is a wasteful number, since it uses less digits than its factorization.

1272660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21223 (or 21221 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 1272660 is about 1128.1223337919. The cubic root of 1272660 is about 108.3687668444.

The spelling of 1272660 in words is "one million, two hundred seventy-two thousand, six hundred sixty".