28576463 has 4 divisors (see below), whose sum is σ = 28648128. Its totient is φ = 28504800.

The previous prime is 28576453. The next prime is 28576477. The reversal of 28576463 is 36467582.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 28576463 - 2⁴ = 28576447 is a prime.

It is a super-2 number, since 2×28576463² = 1633228475180738, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28576463.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28576403) 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 3 ways as a sum of consecutive naturals, for example, 35231 + ... + 36032.

It is an arithmetic number, because the mean of its divisors is an integer number (7162032).

Almost surely, 2^28576463 is an apocalyptic number.

28576463 is a deficient number, since it is larger than the sum of its proper divisors (71665).

28576463 is an equidigital number, since it uses as much as digits as its factorization.

28576463 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71664.

The product of its digits is 241920, while the sum is 41.

The square root of 28576463 is about 5345.6957451767. The cubic root of 28576463 is about 305.7286635968.

The spelling of 28576463 in words is "twenty-eight million, five hundred seventy-six thousand, four hundred sixty-three".