78163532 has 12 divisors (see below), whose sum is σ = 136851456. Its totient is φ = 39063120.

The previous prime is 78163531. The next prime is 78163537. The reversal of 78163532 is 23536187.

It is a super-2 number, since 2×78163532² = 12219075469430048, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78163492 and 78163501.

It is not an unprimeable number, because it can be changed into a prime (78163531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9653 + ... + 15795.

It is an arithmetic number, because the mean of its divisors is an integer number (11404288).

Almost surely, 2^78163532 is an apocalyptic number.

It is an amenable number.

78163532 is a deficient number, since it is larger than the sum of its proper divisors (58687924).

78163532 is a wasteful number, since it uses less digits than its factorization.

78163532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9328 (or 9326 counting only the distinct ones).

The product of its digits is 30240, while the sum is 35.

The square root of 78163532 is about 8841.0141952154. The cubic root of 78163532 is about 427.5642564972.

The spelling of 78163532 in words is "seventy-eight million, one hundred sixty-three thousand, five hundred thirty-two".