78314243 has 4 divisors (see below), whose sum is σ = 89502000. Its totient is φ = 67126488.

The previous prime is 78314233. The next prime is 78314279. The reversal of 78314243 is 34241387.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78314243 - 2⁴ = 78314227 is a prime.

It is a super-2 number, since 2×78314243² = 12266241313326098, which contains 22 as substring.

It is a plaindrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (78314233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5593868 + ... + 5593881.

It is an arithmetic number, because the mean of its divisors is an integer number (22375500).

Almost surely, 2^78314243 is an apocalyptic number.

78314243 is a deficient number, since it is larger than the sum of its proper divisors (11187757).

78314243 is a wasteful number, since it uses less digits than its factorization.

78314243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11187756.

The product of its digits is 16128, while the sum is 32.

The square root of 78314243 is about 8849.5334905293. The cubic root of 78314243 is about 427.8388827138.

The spelling of 78314243 in words is "seventy-eight million, three hundred fourteen thousand, two hundred forty-three".