328612172 has 12 divisors (see below), whose sum is σ = 657224400. Its totient is φ = 140833776.

The previous prime is 328612139. The next prime is 328612177. The reversal of 328612172 is 271216823.

328612172 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (328612177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5868047 + ... + 5868102.

It is an arithmetic number, because the mean of its divisors is an integer number (54768700).

Almost surely, 2^328612172 is an apocalyptic number.

It is an amenable number.

328612172 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.

328612172 is a wasteful number, since it uses less digits than its factorization.

328612172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11736160 (or 11736158 counting only the distinct ones).

The product of its digits is 8064, while the sum is 32.

The square root of 328612172 is about 18127.6631698628. The cubic root of 328612172 is about 690.0722265638.

Adding to 328612172 its reverse (271216823), we get a palindrome (599828995).

The spelling of 328612172 in words is "three hundred twenty-eight million, six hundred twelve thousand, one hundred seventy-two".