232728985 has 4 divisors (see below), whose sum is σ = 279274788. Its totient is φ = 186183184.

The previous prime is 232728971. The next prime is 232729009. The reversal of 232728985 is 589827232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 107557641 + 125171344 = 10371^2 + 11188^2 .

It is a cyclic number.

It is not a de Polignac number, because 232728985 - 2⁵ = 232728953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23272894 + ... + 23272903.

It is an arithmetic number, because the mean of its divisors is an integer number (69818697).

Almost surely, 2^232728985 is an apocalyptic number.

It is an amenable number.

232728985 is a deficient number, since it is larger than the sum of its proper divisors (46545803).

232728985 is an equidigital number, since it uses as much as digits as its factorization.

232728985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46545802.

The product of its digits is 483840, while the sum is 46.

The square root of 232728985 is about 15255.4575480383. The cubic root of 232728985 is about 615.1062763876.

The spelling of 232728985 in words is "two hundred thirty-two million, seven hundred twenty-eight thousand, nine hundred eighty-five".