78418852 has 24 divisors (see below), whose sum is σ = 144969440. Its totient is φ = 37013760.

The previous prime is 78418843. The next prime is 78418897. The reversal of 78418852 is 25881487.

It is a super-2 number, since 2×78418852² = 12299032697995808, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78418799 and 78418808.

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, 21652 + ... + 25012.

Almost surely, 2^78418852 is an apocalyptic number.

It is an amenable number.

78418852 is a deficient number, since it is larger than the sum of its proper divisors (66550588).

78418852 is a wasteful number, since it uses less digits than its factorization.

78418852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3691 (or 3689 counting only the distinct ones).

The product of its digits is 143360, while the sum is 43.

The square root of 78418852 is about 8855.4419426701. The cubic root of 78418852 is about 428.0292945856.

The spelling of 78418852 in words is "seventy-eight million, four hundred eighteen thousand, eight hundred fifty-two".