328750491 has 4 divisors (see below), whose sum is σ = 438333992. Its totient is φ = 219166992.

The previous prime is 328750489. The next prime is 328750493. The reversal of 328750491 is 194057823.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (328750489) and next prime (328750493).

It is not a de Polignac number, because 328750491 - 2¹ = 328750489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (328750493) 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, 54791746 + ... + 54791751.

It is an arithmetic number, because the mean of its divisors is an integer number (109583498).

Almost surely, 2^328750491 is an apocalyptic number.

328750491 is a deficient number, since it is larger than the sum of its proper divisors (109583501).

328750491 is a wasteful number, since it uses less digits than its factorization.

328750491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109583500.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 328750491 is about 18131.4779044622. The cubic root of 328750491 is about 690.1690344114.

The spelling of 328750491 in words is "three hundred twenty-eight million, seven hundred fifty thousand, four hundred ninety-one".