1366272 has 54 divisors (see below), whose sum is σ = 3945942. Its totient is φ = 454656.

The previous prime is 1366241. The next prime is 1366279. The reversal of 1366272 is 2726631.

It is a happy number.

1366272 is a `hidden beast` number, since 1 + 36 + 627 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1218816 + 147456 = 1104^2 + 384^2 .

It is not an unprimeable number, because it can be changed into a prime (1366279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2008 + ... + 2600.

It is an arithmetic number, because the mean of its divisors is an integer number (73073).

2^1366272 is an apocalyptic number.

1366272 is a gapful number since it is divisible by the number (12) 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 1366272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1972971).

1366272 is an abundant number, since it is smaller than the sum of its proper divisors (2579670).

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

1366272 is an equidigital number, since it uses as much as digits as its factorization.

1366272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 615 (or 598 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 1366272 is about 1168.8763835410. The cubic root of 1366272 is about 110.9632213189.

The spelling of 1366272 in words is "one million, three hundred sixty-six thousand, two hundred seventy-two".