78364838 has 8 divisors (see below), whose sum is σ = 121339200. Its totient is φ = 37918440.

The previous prime is 78364829. The next prime is 78364859. The reversal of 78364838 is 83846387.

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

It is a super-2 number, since 2×78364838² = 12282095669532488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78364792 and 78364801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 631913 + ... + 632036.

It is an arithmetic number, because the mean of its divisors is an integer number (15167400).

Almost surely, 2^78364838 is an apocalyptic number.

78364838 is a deficient number, since it is larger than the sum of its proper divisors (42974362).

78364838 is a wasteful number, since it uses less digits than its factorization.

78364838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1263982.

The product of its digits is 774144, while the sum is 47.

The square root of 78364838 is about 8852.3916542367. The cubic root of 78364838 is about 427.9309981346.

The spelling of 78364838 in words is "seventy-eight million, three hundred sixty-four thousand, eight hundred thirty-eight".