78422422 has 24 divisors (see below), whose sum is σ = 130508280. Its totient is φ = 35305920.

The previous prime is 78422419. The next prime is 78422423. The reversal of 78422422 is 22422487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78422423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11029 + ... + 16687.

It is an arithmetic number, because the mean of its divisors is an integer number (5437845).

Almost surely, 2^78422422 is an apocalyptic number.

78422422 is a deficient number, since it is larger than the sum of its proper divisors (52085858).

78422422 is a wasteful number, since it uses less digits than its factorization.

78422422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5728 (or 5715 counting only the distinct ones).

The product of its digits is 14336, while the sum is 31.

The square root of 78422422 is about 8855.6435113435. The cubic root of 78422422 is about 428.0357897984.

It can be divided in two parts, 78 and 422422, that added together give a square (422500 = 650²).

The spelling of 78422422 in words is "seventy-eight million, four hundred twenty-two thousand, four hundred twenty-two".