1378628 has 12 divisors (see below), whose sum is σ = 2420880. Its totient is φ = 686952.

The previous prime is 1378613. The next prime is 1378639. The reversal of 1378628 is 8268731.

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 in 3 ways as a sum of consecutive naturals, for example, 1763 + ... + 2421.

It is an arithmetic number, because the mean of its divisors is an integer number (201740).

2^1378628 is an apocalyptic number.

It is an amenable number.

1378628 is a deficient number, since it is larger than the sum of its proper divisors (1042252).

1378628 is a wasteful number, since it uses less digits than its factorization.

1378628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1186 (or 1184 counting only the distinct ones).

The product of its digits is 16128, while the sum is 35.

The square root of 1378628 is about 1174.1499052506. The cubic root of 1378628 is about 111.2967198460.

The spelling of 1378628 in words is "one million, three hundred seventy-eight thousand, six hundred twenty-eight".