78281114 has 4 divisors (see below), whose sum is σ = 117421674. Its totient is φ = 39140556.

The previous prime is 78281111. The next prime is 78281123. The reversal of 78281114 is 41118287.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 41118287 = 7 ⋅5874041.

It can be written as a sum of positive squares in only one way, i.e., 78234025 + 47089 = 8845^2 + 217^2 .

It is a super-2 number, since 2×78281114² = 12255865618161992, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78281111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19570277 + ... + 19570280.

Almost surely, 2^78281114 is an apocalyptic number.

78281114 is a deficient number, since it is larger than the sum of its proper divisors (39140560).

78281114 is a wasteful number, since it uses less digits than its factorization.

78281114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39140559.

The product of its digits is 3584, while the sum is 32.

The square root of 78281114 is about 8847.6614989499. The cubic root of 78281114 is about 427.7785451433.

The spelling of 78281114 in words is "seventy-eight million, two hundred eighty-one thousand, one hundred fourteen".