28303685 has 8 divisors (see below), whose sum is σ = 35441280. Its totient is φ = 21658384.

The previous prime is 28303669. The next prime is 28303687. The reversal of 28303685 is 58630382.

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

It is a cyclic number.

It is not a de Polignac number, because 28303685 - 2⁴ = 28303669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28303687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122945 + ... + 123174.

It is an arithmetic number, because the mean of its divisors is an integer number (4430160).

Almost surely, 2^28303685 is an apocalyptic number.

It is an amenable number.

28303685 is a deficient number, since it is larger than the sum of its proper divisors (7137595).

28303685 is a wasteful number, since it uses less digits than its factorization.

28303685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246147.

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 28303685 is about 5320.1207693059. The cubic root of 28303685 is about 304.7527692826.

The spelling of 28303685 in words is "twenty-eight million, three hundred three thousand, six hundred eighty-five".