28579923 has 12 divisors (see below), whose sum is σ = 42614208. Its totient is φ = 18438480.

The previous prime is 28579919. The next prime is 28579927. The reversal of 28579923 is 32997582.

It is an interprime number because it is at equal distance from previous prime (28579919) and next prime (28579927).

It is not a de Polignac number, because 28579923 - 2² = 28579919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28579927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50940 + ... + 51497.

It is an arithmetic number, because the mean of its divisors is an integer number (3551184).

Almost surely, 2^28579923 is an apocalyptic number.

28579923 is a deficient number, since it is larger than the sum of its proper divisors (14034285).

28579923 is a wasteful number, since it uses less digits than its factorization.

28579923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102474 (or 102471 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 28579923 is about 5346.0193602343. The cubic root of 28579923 is about 305.7410021717.

It can be divided in two parts, 285 and 79923, that added together give a palindrome (80208).

The spelling of 28579923 in words is "twenty-eight million, five hundred seventy-nine thousand, nine hundred twenty-three".