8378738 has 8 divisors (see below), whose sum is σ = 13001580. Its totient is φ = 4044880.

The previous prime is 8378731. The next prime is 8378771.

8378738 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 8254129 + 124609 = 2873^2 + 353^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (8378731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72173 + ... + 72288.

Almost surely, 2^8378738 is an apocalyptic number.

8378738 is a deficient number, since it is larger than the sum of its proper divisors (4622842).

8378738 is a wasteful number, since it uses less digits than its factorization.

8378738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144492.

The product of its digits is 225792, while the sum is 44.

The square root of 8378738 is about 2894.6049816858. The cubic root of 8378738 is about 203.1076135967.

The spelling of 8378738 in words is "eight million, three hundred seventy-eight thousand, seven hundred thirty-eight".