28587430 has 16 divisors (see below), whose sum is σ = 51931440. Its totient is φ = 11329632.

The previous prime is 28587407. The next prime is 28587439. The reversal of 28587430 is 3478582.

It is a self number, because there is not a number n which added to its sum of digits gives 28587430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28587439) 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, 12024 + ... + 14203.

It is an arithmetic number, because the mean of its divisors is an integer number (3245715).

Almost surely, 2^28587430 is an apocalyptic number.

28587430 is a deficient number, since it is larger than the sum of its proper divisors (23344010).

28587430 is a wasteful number, since it uses less digits than its factorization.

28587430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26343.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 28587430 is about 5346.7214253223. The cubic root of 28587430 is about 305.7677691761.

The spelling of 28587430 in words is "twenty-eight million, five hundred eighty-seven thousand, four hundred thirty".