28985347 has 4 divisors (see below), whose sum is σ = 29092576. Its totient is φ = 28878120.

The previous prime is 28985303. The next prime is 28985351. The reversal of 28985347 is 74358982.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28985347 - 2⁷ = 28985219 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28985297 and 28985306.

It is not an unprimeable number, because it can be changed into a prime (28985387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53208 + ... + 53749.

It is an arithmetic number, because the mean of its divisors is an integer number (7273144).

Almost surely, 2^28985347 is an apocalyptic number.

28985347 is a deficient number, since it is larger than the sum of its proper divisors (107229).

28985347 is a wasteful number, since it uses less digits than its factorization.

28985347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107228.

The product of its digits is 483840, while the sum is 46.

The square root of 28985347 is about 5383.8041383394. The cubic root of 28985347 is about 307.1799282665.

The spelling of 28985347 in words is "twenty-eight million, nine hundred eighty-five thousand, three hundred forty-seven".