78466836 has 36 divisors (see below), whose sum is σ = 212983008. Its totient is φ = 22418928.

The previous prime is 78466831. The next prime is 78466847. The reversal of 78466836 is 63866487.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78466831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66136 + ... + 67311.

Almost surely, 2^78466836 is an apocalyptic number.

It is an amenable number.

78466836 is an abundant number, since it is smaller than the sum of its proper divisors (134516172).

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

78466836 is a wasteful number, since it uses less digits than its factorization.

78466836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133468 (or 133459 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 48.

The square root of 78466836 is about 8858.1508228298. The cubic root of 78466836 is about 428.1165795918.

The spelling of 78466836 in words is "seventy-eight million, four hundred sixty-six thousand, eight hundred thirty-six".