1078438 has 4 divisors (see below), whose sum is σ = 1617660. Its totient is φ = 539218.

The previous prime is 1078417. The next prime is 1078471. The reversal of 1078438 is 8348701.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8348701 = 23 ⋅362987.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 269608 + ... + 269611.

It is an arithmetic number, because the mean of its divisors is an integer number (404415).

2^1078438 is an apocalyptic number.

1078438 is a deficient number, since it is larger than the sum of its proper divisors (539222).

1078438 is an equidigital number, since it uses as much as digits as its factorization.

1078438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539221.

The product of its (nonzero) digits is 5376, while the sum is 31.

The square root of 1078438 is about 1038.4786950150. The cubic root of 1078438 is about 102.5490702980.

The spelling of 1078438 in words is "one million, seventy-eight thousand, four hundred thirty-eight".