28630285 has 16 divisors (see below), whose sum is σ = 36619776. Its totient is φ = 21438208.

The previous prime is 28630271. The next prime is 28630297. The reversal of 28630285 is 58203682.

It is not a de Polignac number, because 28630285 - 2⁷ = 28630157 is a prime.

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 28630285.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2757 + ... + 8053.

It is an arithmetic number, because the mean of its divisors is an integer number (2288736).

Almost surely, 2^28630285 is an apocalyptic number.

It is an amenable number.

28630285 is a deficient number, since it is larger than the sum of its proper divisors (7989491).

28630285 is a wasteful number, since it uses less digits than its factorization.

28630285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5372.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 28630285 is about 5350.7275206275. The cubic root of 28630285 is about 305.9204835609.

The spelling of 28630285 in words is "twenty-eight million, six hundred thirty thousand, two hundred eighty-five".