328402785 has 16 divisors (see below), whose sum is σ = 525733056. Its totient is φ = 175051968.

The previous prime is 328402769. The next prime is 328402801. The reversal of 328402785 is 587204823.

It is an interprime number because it is at equal distance from previous prime (328402769) and next prime (328402801).

It is not a de Polignac number, because 328402785 - 2⁴ = 328402769 is a prime.

It is a Curzon number.

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 15 ways as a sum of consecutive naturals, for example, 28662 + ... + 38448.

It is an arithmetic number, because the mean of its divisors is an integer number (32858316).

Almost surely, 2^328402785 is an apocalyptic number.

It is an amenable number.

328402785 is a deficient number, since it is larger than the sum of its proper divisors (197330271).

328402785 is a wasteful number, since it uses less digits than its factorization.

328402785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12032.

The product of its (nonzero) digits is 107520, while the sum is 39.

The square root of 328402785 is about 18121.8869050659. The cubic root of 328402785 is about 689.9256273546.

The spelling of 328402785 in words is "three hundred twenty-eight million, four hundred two thousand, seven hundred eighty-five".