78422486 has 8 divisors (see below), whose sum is σ = 117726744. Its totient is φ = 39180240.

The previous prime is 78422453. The next prime is 78422489. The reversal of 78422486 is 68422487.

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 (78422489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12200 + ... + 17483.

It is an arithmetic number, because the mean of its divisors is an integer number (14715843).

Almost surely, 2^78422486 is an apocalyptic number.

78422486 is a deficient number, since it is larger than the sum of its proper divisors (39304258).

78422486 is a wasteful number, since it uses less digits than its factorization.

78422486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31006.

The product of its digits is 172032, while the sum is 41.

The square root of 78422486 is about 8855.6471248577. The cubic root of 78422486 is about 428.0359062373.

Subtracting from 78422486 its reverse (68422487), we obtain a palindrome (9999999).

The spelling of 78422486 in words is "seventy-eight million, four hundred twenty-two thousand, four hundred eighty-six".