78243036 has 12 divisors (see below), whose sum is σ = 182567112. Its totient is φ = 26081008.

The previous prime is 78243017. The next prime is 78243037. The reversal of 78243036 is 63034287.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×78243036² = 12243945364994592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78242988 and 78243006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78243037) 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, 3260115 + ... + 3260138.

It is an arithmetic number, because the mean of its divisors is an integer number (15213926).

Almost surely, 2^78243036 is an apocalyptic number.

It is an amenable number.

78243036 is an abundant number, since it is smaller than the sum of its proper divisors (104324076).

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

78243036 is a wasteful number, since it uses less digits than its factorization.

78243036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6520260 (or 6520258 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 78243036 is about 8845.5093691658. The cubic root of 78243036 is about 427.7091729689.

The spelling of 78243036 in words is "seventy-eight million, two hundred forty-three thousand, thirty-six".