84780328 has 16 divisors (see below), whose sum is σ = 160603380. Its totient is φ = 41952768.

The previous prime is 84780313. The next prime is 84780331. The reversal of 84780328 is 82308748.

It can be written as a sum of positive squares in 2 ways, for example, as 84235684 + 544644 = 9178^2 + 738^2 .

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 3 ways as a sum of consecutive naturals, for example, 53851 + ... + 55402.

Almost surely, 2^84780328 is an apocalyptic number.

It is an amenable number.

84780328 is a deficient number, since it is larger than the sum of its proper divisors (75823052).

84780328 is a wasteful number, since it uses less digits than its factorization.

84780328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109356 (or 109352 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 40.

The square root of 84780328 is about 9207.6233632789. The cubic root of 84780328 is about 439.3038716812.

The spelling of 84780328 in words is "eighty-four million, seven hundred eighty thousand, three hundred twenty-eight".