28088622 has 24 divisors (see below), whose sum is σ = 62009064. Its totient is φ = 9185904.

The previous prime is 28088561. The next prime is 28088623. The reversal of 28088622 is 22688082.

28088622 is a `hidden beast` number, since 28 + 0 + 8 + 8 + 622 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28088623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13768 + ... + 15675.

It is an arithmetic number, because the mean of its divisors is an integer number (2583711).

Almost surely, 2^28088622 is an apocalyptic number.

28088622 is an abundant number, since it is smaller than the sum of its proper divisors (33920442).

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

28088622 is a wasteful number, since it uses less digits than its factorization.

28088622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29504 (or 29501 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 36.

The square root of 28088622 is about 5299.8699984056. The cubic root of 28088622 is about 303.9789271519.

The spelling of 28088622 in words is "twenty-eight million, eighty-eight thousand, six hundred twenty-two".