28968090 has 16 divisors (see below), whose sum is σ = 69523488. Its totient is φ = 7724816.

The previous prime is 28968083. The next prime is 28968091. The reversal of 28968090 is 9086982.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28968091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 482772 + ... + 482831.

It is an arithmetic number, because the mean of its divisors is an integer number (4345218).

Almost surely, 2^28968090 is an apocalyptic number.

28968090 is an abundant number, since it is smaller than the sum of its proper divisors (40555398).

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

28968090 is a wasteful number, since it uses less digits than its factorization.

28968090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 965613.

The product of its (nonzero) digits is 62208, while the sum is 42.

The square root of 28968090 is about 5382.2012225483. The cubic root of 28968090 is about 307.1189542809.

The spelling of 28968090 in words is "twenty-eight million, nine hundred sixty-eight thousand, ninety".