328525988 has 36 divisors (see below), whose sum is σ = 677976012. Its totient is φ = 138862080.

The previous prime is 328525987. The next prime is 328525993. The reversal of 328525988 is 889525823.

It can be written as a sum of positive squares in 2 ways, for example, as 207129664 + 121396324 = 14392^2 + 11018^2 .

It is a super-2 number, since 2×328525988² = 215858649582752288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (328525987) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 2828 + ... + 25788.

It is an arithmetic number, because the mean of its divisors is an integer number (18832667).

Almost surely, 2^328525988 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 328525988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (338988006).

328525988 is an abundant number, since it is smaller than the sum of its proper divisors (349450024).

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

328525988 is a wasteful number, since it uses less digits than its factorization.

328525988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23052 (or 23043 counting only the distinct ones).

The product of its digits is 1382400, while the sum is 50.

The square root of 328525988 is about 18125.2858736076. The cubic root of 328525988 is about 690.0118936548.

The spelling of 328525988 in words is "three hundred twenty-eight million, five hundred twenty-five thousand, nine hundred eighty-eight".