78308036 has 6 divisors (see below), whose sum is σ = 137039070. Its totient is φ = 39154016.

The previous prime is 78308029. The next prime is 78308071. The reversal of 78308036 is 63080387.

It can be written as a sum of positive squares in only one way, i.e., 39942400 + 38365636 = 6320^2 + 6194^2 .

It is a super-2 number, since 2×78308036² = 12264297004354592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78307987 and 78308005.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9788501 + ... + 9788508.

It is an arithmetic number, because the mean of its divisors is an integer number (22839845).

Almost surely, 2^78308036 is an apocalyptic number.

It is an amenable number.

78308036 is a deficient number, since it is larger than the sum of its proper divisors (58731034).

78308036 is a wasteful number, since it uses less digits than its factorization.

78308036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19577013 (or 19577011 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 78308036 is about 8849.1827871279. The cubic root of 78308036 is about 427.8275792522.

The spelling of 78308036 in words is "seventy-eight million, three hundred eight thousand, thirty-six".