1378976 has 12 divisors (see below), whose sum is σ = 2714922. Its totient is φ = 689472.

The previous prime is 1378969. The next prime is 1378997. The reversal of 1378976 is 6798731.

It can be written as a sum of positive squares in only one way, i.e., 1263376 + 115600 = 1124^2 + 340^2 .

It is a zygodrome in base 4.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21515 + ... + 21578.

2^1378976 is an apocalyptic number.

1378976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1378976 is a deficient number, since it is larger than the sum of its proper divisors (1335946).

1378976 is an equidigital number, since it uses as much as digits as its factorization.

1378976 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43103 (or 43095 counting only the distinct ones).

The product of its digits is 63504, while the sum is 41.

The square root of 1378976 is about 1174.2980882212. The cubic root of 1378976 is about 111.3060837450.

The spelling of 1378976 in words is "one million, three hundred seventy-eight thousand, nine hundred seventy-six".