1278466 has 16 divisors (see below), whose sum is σ = 2234304. Its totient is φ = 537264.

The previous prime is 1278463. The next prime is 1278467. The reversal of 1278466 is 6648721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1278463) 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, 120 + ... + 1603.

It is an arithmetic number, because the mean of its divisors is an integer number (139644).

2^1278466 is an apocalyptic number.

1278466 is a deficient number, since it is larger than the sum of its proper divisors (955838).

1278466 is a wasteful number, since it uses less digits than its factorization.

1278466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785.

The product of its digits is 16128, while the sum is 34.

The square root of 1278466 is about 1130.6927080334. The cubic root of 1278466 is about 108.5333131937.

The spelling of 1278466 in words is "one million, two hundred seventy-eight thousand, four hundred sixty-six".