28680622 has 8 divisors (see below), whose sum is σ = 43936416. Its totient is φ = 14035152.

The previous prime is 28680599. The next prime is 28680629. The reversal of 28680622 is 22608682.

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 (28680629) 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, 152463 + ... + 152650.

It is an arithmetic number, because the mean of its divisors is an integer number (5492052).

Almost surely, 2^28680622 is an apocalyptic number.

28680622 is a deficient number, since it is larger than the sum of its proper divisors (15255794).

28680622 is a wasteful number, since it uses less digits than its factorization.

28680622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305162.

The product of its (nonzero) digits is 18432, while the sum is 34.

The square root of 28680622 is about 5355.4292078227. The cubic root of 28680622 is about 306.0996656567.

It can be divided in two parts, 286 and 80622, that added together give a palindrome (80908).

The spelling of 28680622 in words is "twenty-eight million, six hundred eighty thousand, six hundred twenty-two".