1278112 has 24 divisors (see below), whose sum is σ = 2745792. Its totient is φ = 580800.

The previous prime is 1278107. The next prime is 1278113. The reversal of 1278112 is 2118721.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (1278113) 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, 1464 + ... + 2167.

It is an arithmetic number, because the mean of its divisors is an integer number (114408).

2^1278112 is an apocalyptic number.

It is an amenable number.

1278112 is an abundant number, since it is smaller than the sum of its proper divisors (1467680).

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

1278112 is a wasteful number, since it uses less digits than its factorization.

1278112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3652 (or 3644 counting only the distinct ones).

The product of its digits is 224, while the sum is 22.

The square root of 1278112 is about 1130.5361559897. The cubic root of 1278112 is about 108.5232948489.

The spelling of 1278112 in words is "one million, two hundred seventy-eight thousand, one hundred twelve".