28859478 has 16 divisors (see below), whose sum is σ = 57951936. Its totient is φ = 9581000.

The previous prime is 28859477. The next prime is 28859497. The reversal of 28859478 is 87495882.

It is a happy number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28859478.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28859471) 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, 8076 + ... + 11087.

It is an arithmetic number, because the mean of its divisors is an integer number (3621996).

Almost surely, 2^28859478 is an apocalyptic number.

28859478 is an abundant number, since it is smaller than the sum of its proper divisors (29092458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28859478 is a wasteful number, since it uses less digits than its factorization.

28859478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19419.

The product of its digits is 1290240, while the sum is 51.

The square root of 28859478 is about 5372.1018233090. The cubic root of 28859478 is about 306.7346396795.

The spelling of 28859478 in words is "twenty-eight million, eight hundred fifty-nine thousand, four hundred seventy-eight".