78899328 has 48 divisors (see below), whose sum is σ = 227044350. Its totient is φ = 26299392.

The previous prime is 78899299. The next prime is 78899369. The reversal of 78899328 is 82399887.

It can be written as a sum of positive squares in only one way, i.e., 65415744 + 13483584 = 8088^2 + 3672^2 .

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33093 + ... + 35396.

Almost surely, 2^78899328 is an apocalyptic number.

It is an amenable number.

78899328 is an abundant number, since it is smaller than the sum of its proper divisors (148145022).

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

78899328 is a wasteful number, since it uses less digits than its factorization.

78899328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68509 (or 68494 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 78899328 is about 8882.5293694983. The cubic root of 78899328 is about 428.9017004634.

The spelling of 78899328 in words is "seventy-eight million, eight hundred ninety-nine thousand, three hundred twenty-eight".