328145136 has 80 divisors (see below), whose sum is σ = 935297280. Its totient is φ = 98306560.

The previous prime is 328145087. The next prime is 328145141. The reversal of 328145136 is 631541823.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 328145097 and 328145106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 43501 + ... + 50483.

It is an arithmetic number, because the mean of its divisors is an integer number (11691216).

Almost surely, 2^328145136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 328145136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (467648640).

328145136 is an abundant number, since it is smaller than the sum of its proper divisors (607152144).

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

328145136 is a wasteful number, since it uses less digits than its factorization.

328145136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7094 (or 7088 counting only the distinct ones).

The product of its digits is 17280, while the sum is 33.

The square root of 328145136 is about 18114.7767306142. The cubic root of 328145136 is about 689.7451526822.

Adding to 328145136 its reverse (631541823), we get a palindrome (959686959).

It can be divided in two parts, 32814 and 5136, that added together give a triangular number (37950 = T₂₇₅).

The spelling of 328145136 in words is "three hundred twenty-eight million, one hundred forty-five thousand, one hundred thirty-six".