28420968 has 16 divisors (see below), whose sum is σ = 71052480. Its totient is φ = 9473648.

The previous prime is 28420967. The next prime is 28420999. The reversal of 28420968 is 86902482.

It is not an unprimeable number, because it can be changed into a prime (28420963) 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 3 ways as a sum of consecutive naturals, for example, 592080 + ... + 592127.

It is an arithmetic number, because the mean of its divisors is an integer number (4440780).

Almost surely, 2^28420968 is an apocalyptic number.

It is an amenable number.

28420968 is an abundant number, since it is smaller than the sum of its proper divisors (42631512).

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

28420968 is a wasteful number, since it uses less digits than its factorization.

28420968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1184216 (or 1184212 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The square root of 28420968 is about 5331.1319623510. The cubic root of 28420968 is about 305.1731275441.

The spelling of 28420968 in words is "twenty-eight million, four hundred twenty thousand, nine hundred sixty-eight".