78472982 has 16 divisors (see below), whose sum is σ = 134652672. Its totient is φ = 33599400.

The previous prime is 78472981. The next prime is 78472993. The reversal of 78472982 is 28927487.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78472981) 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, 18383 + ... + 22245.

It is an arithmetic number, because the mean of its divisors is an integer number (8415792).

Almost surely, 2^78472982 is an apocalyptic number.

78472982 is a deficient number, since it is larger than the sum of its proper divisors (56179690).

78472982 is a wasteful number, since it uses less digits than its factorization.

78472982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5323.

The product of its digits is 451584, while the sum is 47.

The square root of 78472982 is about 8858.4977281704. The cubic root of 78472982 is about 428.1277568651.

The spelling of 78472982 in words is "seventy-eight million, four hundred seventy-two thousand, nine hundred eighty-two".