78343219 has 8 divisors (see below), whose sum is σ = 80297280. Its totient is φ = 76401216.

The previous prime is 78343211. The next prime is 78343241. The reversal of 78343219 is 91234387.

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

It is a cyclic number.

It is not a de Polignac number, because 78343219 - 2³ = 78343211 is a prime.

It is a super-2 number, since 2×78343219² = 12275319926563922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78343211) 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, 10927 + ... + 16615.

It is an arithmetic number, because the mean of its divisors is an integer number (10037160).

Almost surely, 2^78343219 is an apocalyptic number.

78343219 is a deficient number, since it is larger than the sum of its proper divisors (1954061).

78343219 is a wasteful number, since it uses less digits than its factorization.

78343219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6029.

The product of its digits is 36288, while the sum is 37.

The square root of 78343219 is about 8851.1704875683. The cubic root of 78343219 is about 427.8916425113.

The spelling of 78343219 in words is "seventy-eight million, three hundred forty-three thousand, two hundred nineteen".