328646725 has 24 divisors (see below), whose sum is σ = 451230048. Its totient is φ = 235435200.

The previous prime is 328646723. The next prime is 328646777. The reversal of 328646725 is 527646823.

It is not a de Polignac number, because 328646725 - 2¹ = 328646723 is a prime.

It is a Duffinian number.

Its product of digits (483840) is a multiple of the sum of its prime divisors (17920).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328646723) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9507 + ... + 27343.

It is an arithmetic number, because the mean of its divisors is an integer number (18801252).

Almost surely, 2^328646725 is an apocalyptic number.

It is an amenable number.

328646725 is a deficient number, since it is larger than the sum of its proper divisors (122583323).

328646725 is a wasteful number, since it uses less digits than its factorization.

328646725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17925 (or 17920 counting only the distinct ones).

The product of its digits is 483840, while the sum is 43.

The square root of 328646725 is about 18128.6161909838. The cubic root of 328646725 is about 690.0964123488.

The spelling of 328646725 in words is "three hundred twenty-eight million, six hundred forty-six thousand, seven hundred twenty-five".