328941247 has 4 divisors (see below), whose sum is σ = 331342416. Its totient is φ = 326540080.

The previous prime is 328941169. The next prime is 328941253. The reversal of 328941247 is 742149823.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 742149823 = 19 ⋅39060517.

It is a cyclic number.

It is not a de Polignac number, because 328941247 - 2¹⁵ = 328908479 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 (328941947) 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, 1200379 + ... + 1200652.

It is an arithmetic number, because the mean of its divisors is an integer number (82835604).

Almost surely, 2^328941247 is an apocalyptic number.

328941247 is a deficient number, since it is larger than the sum of its proper divisors (2401169).

328941247 is a wasteful number, since it uses less digits than its factorization.

328941247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401168.

The product of its digits is 96768, while the sum is 40.

The square root of 328941247 is about 18136.7374960327. The cubic root of 328941247 is about 690.3024977646.

The spelling of 328941247 in words is "three hundred twenty-eight million, nine hundred forty-one thousand, two hundred forty-seven".