328624397 has 8 divisors (see below), whose sum is σ = 339892992. Its totient is φ = 317397600.

The previous prime is 328624367. The next prime is 328624441. The reversal of 328624397 is 793426823.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 328624397 - 2¹⁴ = 328608013 is a prime.

It is a super-2 number, since 2×328624397² = 215987988607227218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328624357) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5978 + ... + 26324.

It is an arithmetic number, because the mean of its divisors is an integer number (42486624).

Almost surely, 2^328624397 is an apocalyptic number.

It is an amenable number.

328624397 is a deficient number, since it is larger than the sum of its proper divisors (11268595).

328624397 is a wasteful number, since it uses less digits than its factorization.

328624397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20899.

The product of its digits is 435456, while the sum is 44.

The square root of 328624397 is about 18128.0003585613. Note that the first 3 decimals coincide. The cubic root of 328624397 is about 690.0807837923.

The spelling of 328624397 in words is "three hundred twenty-eight million, six hundred twenty-four thousand, three hundred ninety-seven".