328743761 has 16 divisors (see below), whose sum is σ = 349040640. Its totient is φ = 308998800.

The previous prime is 328743749. The next prime is 328743763. The reversal of 328743761 is 167347823.

It is a cyclic number.

It is not a de Polignac number, because 328743761 - 2¹⁰ = 328742737 is a prime.

It is not an unprimeable number, because it can be changed into a prime (328743763) 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, 357260 + ... + 358178.

It is an arithmetic number, because the mean of its divisors is an integer number (21815040).

Almost surely, 2^328743761 is an apocalyptic number.

It is an amenable number.

328743761 is a deficient number, since it is larger than the sum of its proper divisors (20296879).

328743761 is a wasteful number, since it uses less digits than its factorization.

328743761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196.

The product of its digits is 169344, while the sum is 41.

The square root of 328743761 is about 18131.2923146697. The cubic root of 328743761 is about 690.1643247918.

The spelling of 328743761 in words is "three hundred twenty-eight million, seven hundred forty-three thousand, seven hundred sixty-one".