328521949 has 16 divisors (see below), whose sum is σ = 394887168. Its totient is φ = 267209712.

The previous prime is 328521943. The next prime is 328521959. The reversal of 328521949 is 949125823.

It is not a de Polignac number, because 328521949 - 2²¹ = 326424797 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 (328521943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12414 + ... + 28480.

It is an arithmetic number, because the mean of its divisors is an integer number (24680448).

Almost surely, 2^328521949 is an apocalyptic number.

It is an amenable number.

328521949 is a deficient number, since it is larger than the sum of its proper divisors (66365219).

328521949 is a wasteful number, since it uses less digits than its factorization.

328521949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16224.

The product of its digits is 155520, while the sum is 43.

The square root of 328521949 is about 18125.1744543328. The cubic root of 328521949 is about 690.0090659034.

The spelling of 328521949 in words is "three hundred twenty-eight million, five hundred twenty-one thousand, nine hundred forty-nine".