1280244 has 24 divisors (see below), whose sum is σ = 3414208. Its totient is φ = 365760.

The previous prime is 1280231. The next prime is 1280267. The reversal of 1280244 is 4420821.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1280244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7537 + ... + 7704.

2^1280244 is an apocalyptic number.

1280244 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1280244 is an abundant number, since it is smaller than the sum of its proper divisors (2133964).

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

1280244 is a wasteful number, since it uses less digits than its factorization.

1280244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15255 (or 15253 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 1280244 is about 1131.4786785441. The cubic root of 1280244 is about 108.5836033702.

The spelling of 1280244 in words is "one million, two hundred eighty thousand, two hundred forty-four".