78507982 has 8 divisors (see below), whose sum is σ = 134585136. Its totient is φ = 33646272.

The previous prime is 78507977. The next prime is 78507983. The reversal of 78507982 is 28970587.

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 (78507983) 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, 2803843 + ... + 2803870.

It is an arithmetic number, because the mean of its divisors is an integer number (16823142).

Almost surely, 2^78507982 is an apocalyptic number.

78507982 is a deficient number, since it is larger than the sum of its proper divisors (56077154).

78507982 is a wasteful number, since it uses less digits than its factorization.

78507982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5607722.

The product of its (nonzero) digits is 282240, while the sum is 46.

The square root of 78507982 is about 8860.4730122043. The cubic root of 78507982 is about 428.1913976405.

The spelling of 78507982 in words is "seventy-eight million, five hundred seven thousand, nine hundred eighty-two".