1272867 has 16 divisors (see below), whose sum is σ = 1810560. Its totient is φ = 793152.

The previous prime is 1272863. The next prime is 1272881. The reversal of 1272867 is 7682721.

It is not a de Polignac number, because 1272867 - 2² = 1272863 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1272863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7728 + ... + 7890.

It is an arithmetic number, because the mean of its divisors is an integer number (113160).

2^1272867 is an apocalyptic number.

1272867 is a deficient number, since it is larger than the sum of its proper divisors (537693).

1272867 is a wasteful number, since it uses less digits than its factorization.

1272867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322.

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

The square root of 1272867 is about 1128.2140754307. The cubic root of 1272867 is about 108.3746419718.

The spelling of 1272867 in words is "one million, two hundred seventy-two thousand, eight hundred sixty-seven".