28849668 has 12 divisors (see below), whose sum is σ = 67315920. Its totient is φ = 9616552.

The previous prime is 28849591. The next prime is 28849669. The reversal of 28849668 is 86694882.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 28849668.

It is not an unprimeable number, because it can be changed into a prime (28849669) 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, 1202058 + ... + 1202081.

It is an arithmetic number, because the mean of its divisors is an integer number (5609660).

Almost surely, 2^28849668 is an apocalyptic number.

It is an amenable number.

28849668 is an abundant number, since it is smaller than the sum of its proper divisors (38466252).

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

28849668 is a wasteful number, since it uses less digits than its factorization.

28849668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2404146 (or 2404144 counting only the distinct ones).

The product of its digits is 1327104, while the sum is 51.

The square root of 28849668 is about 5371.1886952517. The cubic root of 28849668 is about 306.6998803556.

The spelling of 28849668 in words is "twenty-eight million, eight hundred forty-nine thousand, six hundred sixty-eight".