1278284 has 24 divisors (see below), whose sum is σ = 2596608. Its totient is φ = 539280.

The previous prime is 1278253. The next prime is 1278287. The reversal of 1278284 is 4828721.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1278284.

It is not an unprimeable number, because it can be changed into a prime (1278287) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1667 + ... + 2309.

It is an arithmetic number, because the mean of its divisors is an integer number (108192).

2^1278284 is an apocalyptic number.

1278284 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1278284 is an abundant number, since it is smaller than the sum of its proper divisors (1318324).

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

1278284 is a wasteful number, since it uses less digits than its factorization.

1278284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725 (or 723 counting only the distinct ones).

The product of its digits is 7168, while the sum is 32.

The square root of 1278284 is about 1130.6122235320. The cubic root of 1278284 is about 108.5281627503.

The spelling of 1278284 in words is "one million, two hundred seventy-eight thousand, two hundred eighty-four".