78885345 has 72 divisors (see below), whose sum is σ = 161566272. Its totient is φ = 32746560.

The previous prime is 78885341. The next prime is 78885403. The reversal of 78885345 is 54358887.

It is not a de Polignac number, because 78885345 - 2² = 78885341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78885294 and 78885303.

It is not an unprimeable number, because it can be changed into a prime (78885341) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 88492 + ... + 89378.

It is an arithmetic number, because the mean of its divisors is an integer number (2243976).

Almost surely, 2^78885345 is an apocalyptic number.

It is an amenable number.

78885345 is an abundant number, since it is smaller than the sum of its proper divisors (82680927).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78885345 is a wasteful number, since it uses less digits than its factorization.

78885345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 931 (or 913 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 48.

The square root of 78885345 is about 8881.7422277389. The cubic root of 78885345 is about 428.8763614778.

The spelling of 78885345 in words is "seventy-eight million, eight hundred eighty-five thousand, three hundred forty-five".