28040122 has 16 divisors (see below), whose sum is σ = 45990432. Its totient is φ = 12715920.

The previous prime is 28040113. The next prime is 28040189. The reversal of 28040122 is 22104082.

It is a self number, because there is not a number n which added to its sum of digits gives 28040122.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10288 + ... + 12724.

It is an arithmetic number, because the mean of its divisors is an integer number (2874402).

Almost surely, 2^28040122 is an apocalyptic number.

28040122 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28040122 is a deficient number, since it is larger than the sum of its proper divisors (17950310).

28040122 is a wasteful number, since it uses less digits than its factorization.

28040122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2973.

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 28040122 is about 5295.2924376280. The cubic root of 28040122 is about 303.8038684684.

The spelling of 28040122 in words is "twenty-eight million, forty thousand, one hundred twenty-two".