78922213 has 8 divisors (see below), whose sum is σ = 79833600. Its totient is φ = 78014448.

The previous prime is 78922199. The next prime is 78922231. The reversal of 78922213 is 31222987.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78922213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78922513) 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, 91020 + ... + 91882.

It is an arithmetic number, because the mean of its divisors is an integer number (9979200).

Almost surely, 2^78922213 is an apocalyptic number.

It is an amenable number.

78922213 is a deficient number, since it is larger than the sum of its proper divisors (911387).

78922213 is a wasteful number, since it uses less digits than its factorization.

78922213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811.

The product of its digits is 12096, while the sum is 34.

The square root of 78922213 is about 8883.8174789895. The cubic root of 78922213 is about 428.9431645536.

The spelling of 78922213 in words is "seventy-eight million, nine hundred twenty-two thousand, two hundred thirteen".