78458213 has 8 divisors (see below), whose sum is σ = 83206080. Its totient is φ = 73725120.

The previous prime is 78458209. The next prime is 78458227. The reversal of 78458213 is 31285487.

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 78458213 - 2² = 78458209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78458243) 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, 8408 + ... + 15086.

It is an arithmetic number, because the mean of its divisors is an integer number (10400760).

Almost surely, 2^78458213 is an apocalyptic number.

It is an amenable number.

78458213 is a deficient number, since it is larger than the sum of its proper divisors (4747867).

78458213 is a wasteful number, since it uses less digits than its factorization.

78458213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7387.

The product of its digits is 53760, while the sum is 38.

The square root of 78458213 is about 8857.6640825897. The cubic root of 78458213 is about 428.1008965989.

The spelling of 78458213 in words is "seventy-eight million, four hundred fifty-eight thousand, two hundred thirteen".