1378608 has 80 divisors (see below), whose sum is σ = 4452096. Its totient is φ = 357120.

The previous prime is 1378603. The next prime is 1378613. The reversal of 1378608 is 8068731.

It is an interprime number because it is at equal distance from previous prime (1378603) and next prime (1378613).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (1378603) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 3510 + ... + 3882.

2^1378608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1378608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2226048).

1378608 is an abundant number, since it is smaller than the sum of its proper divisors (3073488).

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

1378608 is a wasteful number, since it uses less digits than its factorization.

1378608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402 (or 396 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 1378608 is about 1174.1413884196. The cubic root of 1378608 is about 111.2961816430.

The spelling of 1378608 in words is "one million, three hundred seventy-eight thousand, six hundred eight".