6378728134 has 8 divisors (see below), whose sum is σ = 10130921208. Its totient is φ = 3001754400.

The previous prime is 6378728123. The next prime is 6378728137. The reversal of 6378728134 is 4318278736.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6378728137) 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, 93804792 + ... + 93804859.

It is an arithmetic number, because the mean of its divisors is an integer number (1266365151).

Almost surely, 2^6378728134 is an apocalyptic number.

6378728134 is a deficient number, since it is larger than the sum of its proper divisors (3752193074).

6378728134 is a wasteful number, since it uses less digits than its factorization.

6378728134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187609670.

The product of its digits is 1354752, while the sum is 49.

The square root of 6378728134 is about 79866.9401817798. The cubic root of 6378728134 is about 1854.5762657809.

The spelling of 6378728134 in words is "six billion, three hundred seventy-eight million, seven hundred twenty-eight thousand, one hundred thirty-four".