1263378 has 16 divisors (see below), whose sum is σ = 2542176. Its totient is φ = 418560.

The previous prime is 1263377. The next prime is 1263391. The reversal of 1263378 is 8733621.

It is a super-2 number, since 2×1263378² = 3192247941768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1263373) 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, 613 + ... + 1703.

It is an arithmetic number, because the mean of its divisors is an integer number (158886).

2^1263378 is an apocalyptic number.

1263378 is an abundant number, since it is smaller than the sum of its proper divisors (1278798).

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

1263378 is a wasteful number, since it uses less digits than its factorization.

1263378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289.

The product of its digits is 6048, while the sum is 30.

The square root of 1263378 is about 1124.0008896794. Note that the first 3 decimals coincide. The cubic root of 1263378 is about 108.1046653374.

Adding to 1263378 its reverse (8733621), we get a palindrome (9996999).

The spelling of 1263378 in words is "one million, two hundred sixty-three thousand, three hundred seventy-eight".