1272536 has 16 divisors (see below), whose sum is σ = 2419800. Its totient is φ = 627264.

The previous prime is 1272461. The next prime is 1272539. The reversal of 1272536 is 6352721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1272539) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 506 + ... + 1673.

2^1272536 is an apocalyptic number.

It is an amenable number.

1272536 is a deficient number, since it is larger than the sum of its proper divisors (1147264).

1272536 is a wasteful number, since it uses less digits than its factorization.

1272536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2258 (or 2254 counting only the distinct ones).

The product of its digits is 2520, while the sum is 26.

The square root of 1272536 is about 1128.0673738745. The cubic root of 1272536 is about 108.3652471394.

The spelling of 1272536 in words is "one million, two hundred seventy-two thousand, five hundred thirty-six".