8378078 has 4 divisors (see below), whose sum is σ = 12567120. Its totient is φ = 4189038.

The previous prime is 8378057. The next prime is 8378087. The reversal of 8378078 is 8708738.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8708738 = 2 ⋅4354369.

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, 2094518 + ... + 2094521.

It is an arithmetic number, because the mean of its divisors is an integer number (3141780).

Almost surely, 2^8378078 is an apocalyptic number.

8378078 is a deficient number, since it is larger than the sum of its proper divisors (4189042).

8378078 is a wasteful number, since it uses less digits than its factorization.

8378078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4189041.

The product of its (nonzero) digits is 75264, while the sum is 41.

The square root of 8378078 is about 2894.4909742475. The cubic root of 8378078 is about 203.1022804727.

The spelling of 8378078 in words is "eight million, three hundred seventy-eight thousand, seventy-eight".