78346145 has 8 divisors (see below), whose sum is σ = 97048320. Its totient is φ = 60654960.

The previous prime is 78346141. The next prime is 78346171. The reversal of 78346145 is 54164387.

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

It is not a de Polignac number, because 78346145 - 2² = 78346141 is a prime.

It is a super-2 number, since 2×78346145² = 12276236872722050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78346099 and 78346108.

It is not an unprimeable number, because it can be changed into a prime (78346141) 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, 252575 + ... + 252884.

It is an arithmetic number, because the mean of its divisors is an integer number (12131040).

Almost surely, 2^78346145 is an apocalyptic number.

It is an amenable number.

78346145 is a deficient number, since it is larger than the sum of its proper divisors (18702175).

78346145 is a wasteful number, since it uses less digits than its factorization.

78346145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505495.

The product of its digits is 80640, while the sum is 38.

The square root of 78346145 is about 8851.3357748986. The cubic root of 78346145 is about 427.8969694789.

The spelling of 78346145 in words is "seventy-eight million, three hundred forty-six thousand, one hundred forty-five".