328512240 has 160 divisors (see below), whose sum is σ = 1293250560. Its totient is φ = 75085056.

The previous prime is 328512229. The next prime is 328512241. The reversal of 328512240 is 42215823.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328512241) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4257 + ... + 25983.

It is an arithmetic number, because the mean of its divisors is an integer number (8082816).

Almost surely, 2^328512240 is an apocalyptic number.

328512240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 328512240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (646625280).

328512240 is an abundant number, since it is smaller than the sum of its proper divisors (964738320).

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

328512240 is a wasteful number, since it uses less digits than its factorization.

328512240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21756 (or 21744 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 328512240 is about 18124.9066204491. The cubic root of 328512240 is about 690.0022684235.

The spelling of 328512240 in words is "three hundred twenty-eight million, five hundred twelve thousand, two hundred forty".