28122782 has 8 divisors (see below), whose sum is σ = 42453336. Its totient is φ = 13971672.

The previous prime is 28122727. The next prime is 28122791. The reversal of 28122782 is 28722182.

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

It is a congruent number.

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, 44468 + ... + 45095.

It is an arithmetic number, because the mean of its divisors is an integer number (5306667).

Almost surely, 2^28122782 is an apocalyptic number.

28122782 is a deficient number, since it is larger than the sum of its proper divisors (14330554).

28122782 is a wasteful number, since it uses less digits than its factorization.

28122782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89722.

The product of its digits is 7168, while the sum is 32.

The square root of 28122782 is about 5303.0917397307. The cubic root of 28122782 is about 304.1021053024.

The spelling of 28122782 in words is "twenty-eight million, one hundred twenty-two thousand, seven hundred eighty-two".