78039034 has 4 divisors (see below), whose sum is σ = 117058554. Its totient is φ = 39019516.

The previous prime is 78039001. The next prime is 78039037. The reversal of 78039034 is 43093087.

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., 62805625 + 15233409 = 7925^2 + 3903^2 .

It is not an unprimeable number, because it can be changed into a prime (78039037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19509757 + ... + 19509760.

Almost surely, 2^78039034 is an apocalyptic number.

78039034 is a deficient number, since it is larger than the sum of its proper divisors (39019520).

78039034 is a wasteful number, since it uses less digits than its factorization.

78039034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39019519.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 78039034 is about 8833.9704550106. The cubic root of 78039034 is about 427.3371293433.

The spelling of 78039034 in words is "seventy-eight million, thirty-nine thousand, thirty-four".