28663122 has 32 divisors (see below), whose sum is σ = 61133184. Its totient is φ = 8928000.

The previous prime is 28663121. The next prime is 28663157. The reversal of 28663122 is 22136682.

It is a self number, because there is not a number n which added to its sum of digits gives 28663122.

It is not an unprimeable number, because it can be changed into a prime (28663121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14472 + ... + 16332.

It is an arithmetic number, because the mean of its divisors is an integer number (1910412).

Almost surely, 2^28663122 is an apocalyptic number.

28663122 is an abundant number, since it is smaller than the sum of its proper divisors (32470062).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28663122 is a wasteful number, since it uses less digits than its factorization.

28663122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034.

The product of its digits is 6912, while the sum is 30.

The square root of 28663122 is about 5353.7951025417. The cubic root of 28663122 is about 306.0373955750.

The spelling of 28663122 in words is "twenty-eight million, six hundred sixty-three thousand, one hundred twenty-two".