78822134 has 4 divisors (see below), whose sum is σ = 118233204. Its totient is φ = 39411066.

The previous prime is 78822041. The next prime is 78822143. The reversal of 78822134 is 43122887.

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

It is a junction number, because it is equal to n+sod(n) for n = 78822094 and 78822103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19705532 + ... + 19705535.

It is an arithmetic number, because the mean of its divisors is an integer number (29558301).

Almost surely, 2^78822134 is an apocalyptic number.

78822134 is a deficient number, since it is larger than the sum of its proper divisors (39411070).

78822134 is a wasteful number, since it uses less digits than its factorization.

78822134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39411069.

The product of its digits is 21504, while the sum is 35.

The square root of 78822134 is about 8878.1830348332. The cubic root of 78822134 is about 428.7617776771.

It can be divided in two parts, 788 and 22134, that added together give a palindrome (22922).

The spelling of 78822134 in words is "seventy-eight million, eight hundred twenty-two thousand, one hundred thirty-four".