78039982 has 8 divisors (see below), whose sum is σ = 117119016. Its totient is φ = 39000312.

The previous prime is 78039961. The next prime is 78039991. The reversal of 78039982 is 28993087.

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

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, 4248 + ... + 13195.

It is an arithmetic number, because the mean of its divisors is an integer number (14639877).

Almost surely, 2^78039982 is an apocalyptic number.

78039982 is a deficient number, since it is larger than the sum of its proper divisors (39079034).

78039982 is a wasteful number, since it uses less digits than its factorization.

78039982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19682.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 78039982 is about 8834.0241113549. The cubic root of 78039982 is about 427.3388597336.

The spelling of 78039982 in words is "seventy-eight million, thirty-nine thousand, nine hundred eighty-two".