328478761 has 16 divisors (see below), whose sum is σ = 360057600. Its totient is φ = 297842688.

The previous prime is 328478719. The next prime is 328478779. The reversal of 328478761 is 167874823.

It is a de Polignac number, because none of the positive numbers 2^k-328478761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328478861) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 232425 + ... + 233833.

It is an arithmetic number, because the mean of its divisors is an integer number (22503600).

Almost surely, 2^328478761 is an apocalyptic number.

It is an amenable number.

328478761 is a deficient number, since it is larger than the sum of its proper divisors (31578839).

328478761 is a wasteful number, since it uses less digits than its factorization.

328478761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728.

The product of its digits is 451584, while the sum is 46.

The square root of 328478761 is about 18123.9830335387. The cubic root of 328478761 is about 689.9788280278.

The spelling of 328478761 in words is "three hundred twenty-eight million, four hundred seventy-eight thousand, seven hundred sixty-one".