1280272 has 60 divisors (see below), whose sum is σ = 3053376. Its totient is φ = 517440.

The previous prime is 1280267. The next prime is 1280281. The reversal of 1280272 is 2720821.

It is a hoax number, since the sum of its digits (22) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 17997 + ... + 18067.

2^1280272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1280272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1526688).

1280272 is an abundant number, since it is smaller than the sum of its proper divisors (1773104).

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

1280272 is a wasteful number, since it uses less digits than its factorization.

1280272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 1280272 is about 1131.4910516659. The cubic root of 1280272 is about 108.5843949690.

The spelling of 1280272 in words is "one million, two hundred eighty thousand, two hundred seventy-two".