34378478 has 4 divisors (see below), whose sum is σ = 51567720. Its totient is φ = 17189238.

The previous prime is 34378423. The next prime is 34378507. The reversal of 34378478 is 87487343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 87487343 = 19 ⋅4604597.

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, 8594618 + ... + 8594621.

It is an arithmetic number, because the mean of its divisors is an integer number (12891930).

Almost surely, 2^34378478 is an apocalyptic number.

34378478 is a deficient number, since it is larger than the sum of its proper divisors (17189242).

34378478 is a wasteful number, since it uses less digits than its factorization.

34378478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17189241.

The product of its digits is 451584, while the sum is 44.

The square root of 34378478 is about 5863.3162971138. The cubic root of 34378478 is about 325.1588272995.

The spelling of 34378478 in words is "thirty-four million, three hundred seventy-eight thousand, four hundred seventy-eight".