78836328 has 40 divisors (see below), whose sum is σ = 220816530. Its totient is φ = 26278560.

The previous prime is 78836309. The next prime is 78836333. The reversal of 78836328 is 82363887.

78836328 is a `hidden beast` number, since 7 + 8 + 8 + 3 + 632 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 63011844 + 15824484 = 7938^2 + 3978^2 .

It is a super-2 number, since 2×78836328² = 12430333225047168, which contains 22 as substring.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 60183 + ... + 61478.

Almost surely, 2^78836328 is an apocalyptic number.

It is an amenable number.

78836328 is an abundant number, since it is smaller than the sum of its proper divisors (141980202).

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

78836328 is a wasteful number, since it uses less digits than its factorization.

78836328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121679 (or 121666 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 78836328 is about 8878.9823741237. The cubic root of 78836328 is about 428.7875127471.

The spelling of 78836328 in words is "seventy-eight million, eight hundred thirty-six thousand, three hundred twenty-eight".