28645733 has 8 divisors (see below), whose sum is σ = 29521440. Its totient is φ = 27775440.

The previous prime is 28645723. The next prime is 28645753. The reversal of 28645733 is 33754682.

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 28645733 - 2⁴ = 28645717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28645723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11078 + ... + 13416.

It is an arithmetic number, because the mean of its divisors is an integer number (3690180).

Almost surely, 2^28645733 is an apocalyptic number.

It is an amenable number.

28645733 is a deficient number, since it is larger than the sum of its proper divisors (875707).

28645733 is a wasteful number, since it uses less digits than its factorization.

28645733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2707.

The product of its digits is 120960, while the sum is 38.

The square root of 28645733 is about 5352.1708679750. The cubic root of 28645733 is about 305.9754953536.

The spelling of 28645733 in words is "twenty-eight million, six hundred forty-five thousand, seven hundred thirty-three".