78004135 has 8 divisors (see below), whose sum is σ = 102114576. Its totient is φ = 56730240.

The previous prime is 78004133. The next prime is 78004151. The reversal of 78004135 is 53140087.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78004135 - 2¹ = 78004133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78004133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 709074 + ... + 709183.

It is an arithmetic number, because the mean of its divisors is an integer number (12764322).

Almost surely, 2^78004135 is an apocalyptic number.

78004135 is a deficient number, since it is larger than the sum of its proper divisors (24110441).

78004135 is a wasteful number, since it uses less digits than its factorization.

78004135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1418273.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 78004135 is about 8831.9949615022. The cubic root of 78004135 is about 427.2734182260.

It can be divided in two parts, 7800 and 4135, that added together give a triangular number (11935 = T₁₅₄).

The spelling of 78004135 in words is "seventy-eight million, four thousand, one hundred thirty-five".