28963285 has 8 divisors (see below), whose sum is σ = 37429560. Its totient is φ = 21388224.

The previous prime is 28963271. The next prime is 28963303. The reversal of 28963285 is 58236982.

It can be written as a sum of positive squares in 4 ways, for example, as 5080516 + 23882769 = 2254^2 + 4887^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28963285 - 2¹¹ = 28961237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 222730 + ... + 222859.

It is an arithmetic number, because the mean of its divisors is an integer number (4678695).

Almost surely, 2^28963285 is an apocalyptic number.

It is an amenable number.

28963285 is a deficient number, since it is larger than the sum of its proper divisors (8466275).

28963285 is a wasteful number, since it uses less digits than its factorization.

28963285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 445607.

The product of its digits is 207360, while the sum is 43.

The square root of 28963285 is about 5381.7548253335. The cubic root of 28963285 is about 307.1019725126.

The spelling of 28963285 in words is "twenty-eight million, nine hundred sixty-three thousand, two hundred eighty-five".