1272736 has 24 divisors (see below), whose sum is σ = 2588544. Its totient is φ = 615360.

The previous prime is 1272679. The next prime is 1272749. The reversal of 1272736 is 6372721.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351 + ... + 1633.

It is an arithmetic number, because the mean of its divisors is an integer number (107856).

2^1272736 is an apocalyptic number.

1272736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1272736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1294272).

1272736 is an abundant number, since it is smaller than the sum of its proper divisors (1315808).

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

1272736 is a wasteful number, since it uses less digits than its factorization.

1272736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324 (or 1316 counting only the distinct ones).

The product of its digits is 3528, while the sum is 28.

The square root of 1272736 is about 1128.1560175791. The cubic root of 1272736 is about 108.3709239700.

The spelling of 1272736 in words is "one million, two hundred seventy-two thousand, seven hundred thirty-six".