328760447 has 4 divisors (see below), whose sum is σ = 331952400. Its totient is φ = 325568496.

The previous prime is 328760423. The next prime is 328760483. The reversal of 328760447 is 744067823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744067823 = 113 ⋅6584671.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-328760447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328760147) 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, 1595822 + ... + 1596027.

It is an arithmetic number, because the mean of its divisors is an integer number (82988100).

Almost surely, 2^328760447 is an apocalyptic number.

328760447 is a deficient number, since it is larger than the sum of its proper divisors (3191953).

328760447 is a wasteful number, since it uses less digits than its factorization.

328760447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3191952.

The product of its (nonzero) digits is 225792, while the sum is 41.

The square root of 328760447 is about 18131.7524525348. The cubic root of 328760447 is about 690.1760014515.

The spelling of 328760447 in words is "three hundred twenty-eight million, seven hundred sixty thousand, four hundred forty-seven".