78278114 has 4 divisors (see below), whose sum is σ = 117417174. Its totient is φ = 39139056.

The previous prime is 78278111. The next prime is 78278141. The reversal of 78278114 is 41187287.

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., 39627025 + 38651089 = 6295^2 + 6217^2 .

It is a super-2 number, since 2×78278114² = 12254926262793992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78278111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19569527 + ... + 19569530.

Almost surely, 2^78278114 is an apocalyptic number.

78278114 is a deficient number, since it is larger than the sum of its proper divisors (39139060).

78278114 is a wasteful number, since it uses less digits than its factorization.

78278114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39139059.

The product of its digits is 25088, while the sum is 38.

The square root of 78278114 is about 8847.4919610023. The cubic root of 78278114 is about 427.7730804279.

The spelling of 78278114 in words is "seventy-eight million, two hundred seventy-eight thousand, one hundred fourteen".