28442282 has 8 divisors (see below), whose sum is σ = 46541952. Its totient is φ = 12928300.

The previous prime is 28442279. The next prime is 28442299. The reversal of 28442282 is 28224482.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 646394 + ... + 646437.

It is an arithmetic number, because the mean of its divisors is an integer number (5817744).

Almost surely, 2^28442282 is an apocalyptic number.

28442282 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28442282 is a deficient number, since it is larger than the sum of its proper divisors (18099670).

28442282 is a wasteful number, since it uses less digits than its factorization.

28442282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292844.

The product of its digits is 16384, while the sum is 32.

The square root of 28442282 is about 5333.1306003135. The cubic root of 28442282 is about 305.2493955860.

The spelling of 28442282 in words is "twenty-eight million, four hundred forty-two thousand, two hundred eighty-two".