1280224 has 24 divisors (see below), whose sum is σ = 2750328. Its totient is φ = 581760.

The previous prime is 1280221. The next prime is 1280231. The reversal of 1280224 is 4220821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1280221) 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, 1467 + ... + 2170.

It is an arithmetic number, because the mean of its divisors is an integer number (114597).

2^1280224 is an apocalyptic number.

It is an amenable number.

1280224 is an abundant number, since it is smaller than the sum of its proper divisors (1470104).

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

1280224 is a wasteful number, since it uses less digits than its factorization.

1280224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3658 (or 3650 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1280224 is about 1131.4698405172. The cubic root of 1280224 is about 108.5830379355.

The spelling of 1280224 in words is "one million, two hundred eighty thousand, two hundred twenty-four".