328750000 has 80 divisors (see below), whose sum is σ = 799216704. Its totient is φ = 131000000.

The previous prime is 328749977. The next prime is 328750001. The reversal of 328750000 is 57823.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (328750001) 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 15 ways as a sum of consecutive naturals, for example, 1249869 + ... + 1250131.

Almost surely, 2^328750000 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 328750000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (399608352).

328750000 is an abundant number, since it is smaller than the sum of its proper divisors (470466704).

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

328750000 is an frugal number, since it uses more digits than its factorization.

328750000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306 (or 270 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 328750000 is about 18131.4643644687. The cubic root of 328750000 is about 690.1686908143.

The spelling of 328750000 in words is "three hundred twenty-eight million, seven hundred fifty thousand".