1272836 has 6 divisors (see below), whose sum is σ = 2227470. Its totient is φ = 636416.

The previous prime is 1272833. The next prime is 1272847. The reversal of 1272836 is 6382721.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 774400 + 498436 = 880^2 + 706^2 .

It is a super-2 number, since 2×1272836² = 3240222965792, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1272799 and 1272808.

It is not an unprimeable number, because it can be changed into a prime (1272833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159101 + ... + 159108.

It is an arithmetic number, because the mean of its divisors is an integer number (371245).

2^1272836 is an apocalyptic number.

It is an amenable number.

1272836 is a deficient number, since it is larger than the sum of its proper divisors (954634).

1272836 is a wasteful number, since it uses less digits than its factorization.

1272836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 318213 (or 318211 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 1272836 is about 1128.2003368197. The cubic root of 1272836 is about 108.3737621623.

The spelling of 1272836 in words is "one million, two hundred seventy-two thousand, eight hundred thirty-six".