28668622 has 8 divisors (see below), whose sum is σ = 43221816. Its totient is φ = 14261352.

The previous prime is 28668589. The next prime is 28668667. The reversal of 28668622 is 22686682.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35988 + ... + 36775.

It is an arithmetic number, because the mean of its divisors is an integer number (5402727).

Almost surely, 2^28668622 is an apocalyptic number.

28668622 is a deficient number, since it is larger than the sum of its proper divisors (14553194).

28668622 is a wasteful number, since it uses less digits than its factorization.

28668622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72962.

The product of its digits is 110592, while the sum is 40.

The square root of 28668622 is about 5354.3087322268. The cubic root of 28668622 is about 306.0569689026.

The spelling of 28668622 in words is "twenty-eight million, six hundred sixty-eight thousand, six hundred twenty-two".