1272790 has 16 divisors (see below), whose sum is σ = 2426112. Its totient is φ = 479104.

The previous prime is 1272749. The next prime is 1272811. The reversal of 1272790 is 972721.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3574 + ... + 3913.

It is an arithmetic number, because the mean of its divisors is an integer number (151632).

2^1272790 is an apocalyptic number.

1272790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1272790 is a deficient number, since it is larger than the sum of its proper divisors (1153322).

1272790 is a wasteful number, since it uses less digits than its factorization.

1272790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7511.

The product of its (nonzero) digits is 1764, while the sum is 28.

The square root of 1272790 is about 1128.1799501853. The cubic root of 1272790 is about 108.3724566123.

The spelling of 1272790 in words is "one million, two hundred seventy-two thousand, seven hundred ninety".