1081272 has 16 divisors (see below), whose sum is σ = 2703240. Its totient is φ = 360416.

The previous prime is 1081247. The next prime is 1081277. The reversal of 1081272 is 2721801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1081277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22503 + ... + 22550.

2^1081272 is an apocalyptic number.

1081272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1081272 is an abundant number, since it is smaller than the sum of its proper divisors (1621968).

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

1081272 is a wasteful number, since it uses less digits than its factorization.

1081272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45062 (or 45058 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 21.

The square root of 1081272 is about 1039.8422957353. The cubic root of 1081272 is about 102.6388204309.

The spelling of 1081272 in words is "one million, eighty-one thousand, two hundred seventy-two".