78836045 has 8 divisors (see below), whose sum is σ = 94927896. Its totient is φ = 62852416.

The previous prime is 78836033. The next prime is 78836053. The reversal of 78836045 is 54063887.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 27269284 + 51566761 = 5222^2 + 7181^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 78836045 - 2⁴ = 78836029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78835993 and 78836011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25442 + ... + 28371.

It is an arithmetic number, because the mean of its divisors is an integer number (11865987).

Almost surely, 2^78836045 is an apocalyptic number.

It is an amenable number.

78836045 is a deficient number, since it is larger than the sum of its proper divisors (16091851).

78836045 is a wasteful number, since it uses less digits than its factorization.

78836045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54111.

The product of its (nonzero) digits is 161280, while the sum is 41.

The square root of 78836045 is about 8878.9664375985. The cubic root of 78836045 is about 428.7869996714.

The spelling of 78836045 in words is "seventy-eight million, eight hundred thirty-six thousand, forty-five".