328142778 has 16 divisors (see below), whose sum is σ = 667409760. Its totient is φ = 107526896.

The previous prime is 328142777. The next prime is 328142791. The reversal of 328142778 is 877241823.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (328142777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 463125 + ... + 463832.

It is an arithmetic number, because the mean of its divisors is an integer number (41713110).

Almost surely, 2^328142778 is an apocalyptic number.

328142778 is an abundant number, since it is smaller than the sum of its proper divisors (339266982).

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

328142778 is a wasteful number, since it uses less digits than its factorization.

328142778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 927021.

The product of its digits is 150528, while the sum is 42.

The square root of 328142778 is about 18114.7116455107. The cubic root of 328142778 is about 689.7435005444.

The spelling of 328142778 in words is "three hundred twenty-eight million, one hundred forty-two thousand, seven hundred seventy-eight".