28349622 has 64 divisors (see below), whose sum is σ = 73981440. Its totient is φ = 7877088.

The previous prime is 28349611. The next prime is 28349663. The reversal of 28349622 is 22694382.

28349622 is a `hidden beast` number, since 28 + 3 + 4 + 9 + 622 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12973 + ... + 14999.

It is an arithmetic number, because the mean of its divisors is an integer number (1155960).

Almost surely, 2^28349622 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28349622, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36990720).

28349622 is an abundant number, since it is smaller than the sum of its proper divisors (45631818).

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

28349622 is a wasteful number, since it uses less digits than its factorization.

28349622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2082 (or 2076 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 28349622 is about 5324.4363081926. The cubic root of 28349622 is about 304.9175518433.

The spelling of 28349622 in words is "twenty-eight million, three hundred forty-nine thousand, six hundred twenty-two".