1272306 has 16 divisors (see below), whose sum is σ = 2908224. Its totient is φ = 363504.

The previous prime is 1272289. The next prime is 1272329. The reversal of 1272306 is 6032721.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

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, 15105 + ... + 15188.

It is an arithmetic number, because the mean of its divisors is an integer number (181764).

2^1272306 is an apocalyptic number.

1272306 is an abundant number, since it is smaller than the sum of its proper divisors (1635918).

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

1272306 is a wasteful number, since it uses less digits than its factorization.

1272306 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30305.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 1272306 is about 1127.9654250020. The cubic root of 1272306 is about 108.3587180487.

Adding to 1272306 its product of nonzero digits (504), we get a triangular number (1272810 = T₁₅₉₅).

The spelling of 1272306 in words is "one million, two hundred seventy-two thousand, three hundred six".