28866422 has 8 divisors (see below), whose sum is σ = 46630416. Its totient is φ = 13322952.

The previous prime is 28866389. The next prime is 28866427. The reversal of 28866422 is 22466882.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28866427) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 555098 + ... + 555149.

It is an arithmetic number, because the mean of its divisors is an integer number (5828802).

Almost surely, 2^28866422 is an apocalyptic number.

28866422 is a deficient number, since it is larger than the sum of its proper divisors (17763994).

28866422 is a wasteful number, since it uses less digits than its factorization.

28866422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110262.

The product of its digits is 73728, while the sum is 38.

The square root of 28866422 is about 5372.7480864079. The cubic root of 28866422 is about 306.7592392758.

The spelling of 28866422 in words is "twenty-eight million, eight hundred sixty-six thousand, four hundred twenty-two".