28965047 has 8 divisors (see below), whose sum is σ = 29616000. Its totient is φ = 28319544.

The previous prime is 28965037. The next prime is 28965061. The reversal of 28965047 is 74056982.

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 28965047 - 2⁸ = 28964791 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 28964995 and 28965013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28965037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10508 + ... + 12974.

It is an arithmetic number, because the mean of its divisors is an integer number (3702000).

Almost surely, 2^28965047 is an apocalyptic number.

28965047 is a deficient number, since it is larger than the sum of its proper divisors (650953).

28965047 is a wasteful number, since it uses less digits than its factorization.

28965047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2725.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 28965047 is about 5381.9185240953. The cubic root of 28965047 is about 307.1081999681.

The spelling of 28965047 in words is "twenty-eight million, nine hundred sixty-five thousand, forty-seven".