328473785 has 4 divisors (see below), whose sum is σ = 394168548. Its totient is φ = 262779024.

The previous prime is 328473763. The next prime is 328473791. The reversal of 328473785 is 587374823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 587374823 = 7 ⋅83910689.

It can be written as a sum of positive squares in 2 ways, for example, as 145033849 + 183439936 = 12043^2 + 13544^2 .

It is a cyclic number.

It is not a de Polignac number, because 328473785 - 2⁶ = 328473721 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32847374 + ... + 32847383.

It is an arithmetic number, because the mean of its divisors is an integer number (98542137).

Almost surely, 2^328473785 is an apocalyptic number.

It is an amenable number.

328473785 is a deficient number, since it is larger than the sum of its proper divisors (65694763).

328473785 is an equidigital number, since it uses as much as digits as its factorization.

328473785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65694762.

The product of its digits is 1128960, while the sum is 47.

The square root of 328473785 is about 18123.8457563509. The cubic root of 328473785 is about 689.9753439345.

The spelling of 328473785 in words is "three hundred twenty-eight million, four hundred seventy-three thousand, seven hundred eighty-five".