78046216 has 8 divisors (see below), whose sum is σ = 146336670. Its totient is φ = 39023104.

The previous prime is 78046211. The next prime is 78046217. The reversal of 78046216 is 61264087.

It can be written as a sum of positive squares in only one way, i.e., 76212900 + 1833316 = 8730^2 + 1354^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (78046211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4877881 + ... + 4877896.

Almost surely, 2^78046216 is an apocalyptic number.

It is an amenable number.

78046216 is a deficient number, since it is larger than the sum of its proper divisors (68290454).

78046216 is a wasteful number, since it uses less digits than its factorization.

78046216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9755783 (or 9755779 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 78046216 is about 8834.3769446407. The cubic root of 78046216 is about 427.3502383434.

The spelling of 78046216 in words is "seventy-eight million, forty-six thousand, two hundred sixteen".