328781012 has 12 divisors (see below), whose sum is σ = 657562080. Its totient is φ = 140906136.

The previous prime is 328780999. The next prime is 328781039. The reversal of 328781012 is 210187823.

328781012 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 328781012.

It is a congruent 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, 5871062 + ... + 5871117.

It is an arithmetic number, because the mean of its divisors is an integer number (54796840).

Almost surely, 2^328781012 is an apocalyptic number.

It is an amenable number.

328781012 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

328781012 is a wasteful number, since it uses less digits than its factorization.

328781012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11742190 (or 11742188 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 32.

The square root of 328781012 is about 18132.3195427391. The cubic root of 328781012 is about 690.1903920447.

The spelling of 328781012 in words is "three hundred twenty-eight million, seven hundred eighty-one thousand, twelve".