78464222 has 8 divisors (see below), whose sum is σ = 119186400. Its totient is φ = 38735424.

The previous prime is 78464213. The next prime is 78464273. The reversal of 78464222 is 22246487.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 248147 + ... + 248462.

It is an arithmetic number, because the mean of its divisors is an integer number (14898300).

Almost surely, 2^78464222 is an apocalyptic number.

78464222 is a deficient number, since it is larger than the sum of its proper divisors (40722178).

78464222 is a wasteful number, since it uses less digits than its factorization.

78464222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496690.

The product of its digits is 43008, while the sum is 35.

The square root of 78464222 is about 8858.0032738761. The cubic root of 78464222 is about 428.1118255274. Note that the first 3 decimals are identical.

The spelling of 78464222 in words is "seventy-eight million, four hundred sixty-four thousand, two hundred twenty-two".