78284314 has 4 divisors (see below), whose sum is σ = 117426474. Its totient is φ = 39142156.

The previous prime is 78284299. The next prime is 78284321. The reversal of 78284314 is 41348287.

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

It can be written as a sum of positive squares in only one way, i.e., 77000625 + 1283689 = 8775^2 + 1133^2 .

It is a super-2 number, since 2×78284314² = 12256867636901192, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19571077 + ... + 19571080.

Almost surely, 2^78284314 is an apocalyptic number.

78284314 is a deficient number, since it is larger than the sum of its proper divisors (39142160).

78284314 is a wasteful number, since it uses less digits than its factorization.

78284314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39142159.

The product of its digits is 43008, while the sum is 37.

The square root of 78284314 is about 8847.8423358466. The cubic root of 78284314 is about 427.7843740192.

The spelling of 78284314 in words is "seventy-eight million, two hundred eighty-four thousand, three hundred fourteen".