28645922 has 16 divisors (see below), whose sum is σ = 44492544. Its totient is φ = 13818000.

The previous prime is 28645919. The next prime is 28645927. The reversal of 28645922 is 22954682.

It is not an unprimeable number, because it can be changed into a prime (28645927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29972 + ... + 30912.

It is an arithmetic number, because the mean of its divisors is an integer number (2780784).

Almost surely, 2^28645922 is an apocalyptic number.

28645922 is a deficient number, since it is larger than the sum of its proper divisors (15846622).

28645922 is a wasteful number, since it uses less digits than its factorization.

28645922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1465.

The product of its digits is 69120, while the sum is 38.

The square root of 28645922 is about 5352.1885243328. The cubic root of 28645922 is about 305.9761682780.

The spelling of 28645922 in words is "twenty-eight million, six hundred forty-five thousand, nine hundred twenty-two".