1280616 has 16 divisors (see below), whose sum is σ = 3201600. Its totient is φ = 426864.

The previous prime is 1280603. The next prime is 1280623. The reversal of 1280616 is 6160821.

It is a Harshad number since it is a multiple of its sum of digits (24), and also a Moran number because the ratio is a prime number: 53359 = 1280616 / (1 + 2 + 8 + 0 + 6 + 1 + 6).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26656 + ... + 26703.

It is an arithmetic number, because the mean of its divisors is an integer number (200100).

2^1280616 is an apocalyptic number.

It is an amenable number.

1280616 is an abundant number, since it is smaller than the sum of its proper divisors (1920984).

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

1280616 is a wasteful number, since it uses less digits than its factorization.

1280616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53368 (or 53364 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 1280616 is about 1131.6430532637. The cubic root of 1280616 is about 108.5941193835.

The spelling of 1280616 in words is "one million, two hundred eighty thousand, six hundred sixteen".