78219 has 8 divisors (see below), whose sum is σ = 115920. Its totient is φ = 52128.

The previous prime is 78203. The next prime is 78229. The reversal of 78219 is 91287.

It is not a de Polignac number, because 78219 - 2⁴ = 78203 is a prime.

It is a super-2 number, since 2×78219² = 12236423922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 2897 = 78219 / (7 + 8 + 2 + 1 + 9).

It is a junction number, because it is equal to n+sod(n) for n = 78192 and 78201.

It is not an unprimeable number, because it can be changed into a prime (78229) 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, 1422 + ... + 1475.

It is an arithmetic number, because the mean of its divisors is an integer number (14490).

2⁷⁸²¹⁹ is an apocalyptic number.

78219 is a deficient number, since it is larger than the sum of its proper divisors (37701).

78219 is a wasteful number, since it uses less digits than its factorization.

78219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2906 (or 2900 counting only the distinct ones).

The product of its digits is 1008, while the sum is 27.

The square root of 78219 is about 279.6765989496. The cubic root of 78219 is about 42.7665371539.

The spelling of 78219 in words is "seventy-eight thousand, two hundred nineteen".