28164968 has 32 divisors (see below), whose sum is σ = 57425760. Its totient is φ = 12872640.

The previous prime is 28164959. The next prime is 28164977. The reversal of 28164968 is 86946182.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28164959) and next prime (28164977).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9863 + ... + 12393.

It is an arithmetic number, because the mean of its divisors is an integer number (1794555).

Almost surely, 2^28164968 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28164968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28712880).

28164968 is an abundant number, since it is smaller than the sum of its proper divisors (29260792).

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

28164968 is a wasteful number, since it uses less digits than its factorization.

28164968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2657 (or 2653 counting only the distinct ones).

The product of its digits is 165888, while the sum is 44.

The square root of 28164968 is about 5307.0677402875. The cubic root of 28164968 is about 304.2540869716.

The spelling of 28164968 in words is "twenty-eight million, one hundred sixty-four thousand, nine hundred sixty-eight".