1281570 has 16 divisors (see below), whose sum is σ = 3075840. Its totient is φ = 341744.

The previous prime is 1281563. The next prime is 1281587. The reversal of 1281570 is 751821.

It is a self number, because there is not a number n which added to its sum of digits gives 1281570.

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, 21330 + ... + 21389.

It is an arithmetic number, because the mean of its divisors is an integer number (192240).

2^1281570 is an apocalyptic number.

1281570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1281570 is an abundant number, since it is smaller than the sum of its proper divisors (1794270).

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

1281570 is a wasteful number, since it uses less digits than its factorization.

1281570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42729.

The product of its (nonzero) digits is 560, while the sum is 24.

The square root of 1281570 is about 1132.0644857958. The cubic root of 1281570 is about 108.6210785644.

The spelling of 1281570 in words is "one million, two hundred eighty-one thousand, five hundred seventy".