78567422 has 4 divisors (see below), whose sum is σ = 117851136. Its totient is φ = 39283710.

The previous prime is 78567403. The next prime is 78567443. The reversal of 78567422 is 22476587.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 78567422.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19641854 + ... + 19641857.

It is an arithmetic number, because the mean of its divisors is an integer number (29462784).

Almost surely, 2^78567422 is an apocalyptic number.

78567422 is a deficient number, since it is larger than the sum of its proper divisors (39283714).

78567422 is a wasteful number, since it uses less digits than its factorization.

78567422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39283713.

The product of its digits is 188160, while the sum is 41.

The square root of 78567422 is about 8863.8266002895. The cubic root of 78567422 is about 428.2994345364.

The spelling of 78567422 in words is "seventy-eight million, five hundred sixty-seven thousand, four hundred twenty-two".