78512982 has 16 divisors (see below), whose sum is σ = 157112832. Its totient is φ = 26156520.

The previous prime is 78512977. The next prime is 78512989. The reversal of 78512982 is 28921587.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78512989) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19203 + ... + 22929.

It is an arithmetic number, because the mean of its divisors is an integer number (9819552).

Almost surely, 2^78512982 is an apocalyptic number.

78512982 is an abundant number, since it is smaller than the sum of its proper divisors (78599850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78512982 is a wasteful number, since it uses less digits than its factorization.

78512982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7243.

The product of its digits is 80640, while the sum is 42.

The square root of 78512982 is about 8860.7551596915. The cubic root of 78512982 is about 428.2004876357.

The spelling of 78512982 in words is "seventy-eight million, five hundred twelve thousand, nine hundred eighty-two".