28834647 has 8 divisors (see below), whose sum is σ = 40469760. Its totient is φ = 18211320.

The previous prime is 28834621. The next prime is 28834651. The reversal of 28834647 is 74643882.

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

It is not a de Polignac number, because 28834647 - 2⁶ = 28834583 is a prime.

It is a super-2 number, since 2×28834647² = 1662873735229218, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28834599 and 28834608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28834607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252879 + ... + 252992.

It is an arithmetic number, because the mean of its divisors is an integer number (5058720).

Almost surely, 2^28834647 is an apocalyptic number.

28834647 is a deficient number, since it is larger than the sum of its proper divisors (11635113).

28834647 is a wasteful number, since it uses less digits than its factorization.

28834647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505893.

The product of its digits is 258048, while the sum is 42.

The square root of 28834647 is about 5369.7902193661. The cubic root of 28834647 is about 306.6466418609.

The spelling of 28834647 in words is "twenty-eight million, eight hundred thirty-four thousand, six hundred forty-seven".