1269280 has 24 divisors (see below), whose sum is σ = 2999052. Its totient is φ = 507648.

The previous prime is 1269263. The next prime is 1269283. The reversal of 1269280 is 829621.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1227664 + 41616 = 1108^2 + 204^2 .

It is a super-3 number, since 3×1269280³ = 6134703332192256000, which contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (1269283) 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, 3807 + ... + 4126.

2^1269280 is an apocalyptic number.

1269280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1269280 is an abundant number, since it is smaller than the sum of its proper divisors (1729772).

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

1269280 is an equidigital number, since it uses as much as digits as its factorization.

1269280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7948 (or 7940 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 1269280 is about 1126.6232733261. The cubic root of 1269280 is about 108.2727445554.

The spelling of 1269280 in words is "one million, two hundred sixty-nine thousand, two hundred eighty".