28282146 has 16 divisors (see below), whose sum is σ = 59541600. Its totient is φ = 8931168.

The previous prime is 28282139. The next prime is 28282147. The reversal of 28282146 is 64128282.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28282147) 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 7 ways as a sum of consecutive naturals, for example, 123931 + ... + 124158.

It is an arithmetic number, because the mean of its divisors is an integer number (3721350).

Almost surely, 2^28282146 is an apocalyptic number.

28282146 is an abundant number, since it is smaller than the sum of its proper divisors (31259454).

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

28282146 is a wasteful number, since it uses less digits than its factorization.

28282146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248113.

The product of its digits is 12288, while the sum is 33.

The square root of 28282146 is about 5318.0960878871. The cubic root of 28282146 is about 304.6754444198.

It can be divided in two parts, 282 and 82146, that added together give a palindrome (82428).

The spelling of 28282146 in words is "twenty-eight million, two hundred eighty-two thousand, one hundred forty-six".