230728587 has 8 divisors (see below), whose sum is σ = 308774400. Its totient is φ = 153250920.

The previous prime is 230728577. The next prime is 230728627. The reversal of 230728587 is 785827032.

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

It is not a de Polignac number, because 230728587 - 2¹¹ = 230726539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (230728507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141087 + ... + 142712.

It is an arithmetic number, because the mean of its divisors is an integer number (38596800).

Almost surely, 2^230728587 is an apocalyptic number.

230728587 is a deficient number, since it is larger than the sum of its proper divisors (78045813).

230728587 is a wasteful number, since it uses less digits than its factorization.

230728587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284073.

The product of its (nonzero) digits is 188160, while the sum is 42.

The square root of 230728587 is about 15189.7526971310. The cubic root of 230728587 is about 613.3388418758.

The spelling of 230728587 in words is "two hundred thirty million, seven hundred twenty-eight thousand, five hundred eighty-seven".