28022774 has 8 divisors (see below), whose sum is σ = 45267600. Its totient is φ = 12933576.

The previous prime is 28022759. The next prime is 28022789. The reversal of 28022774 is 47722082.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28022759) and next prime (28022789).

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

It is a self number, because there is not a number n which added to its sum of digits gives 28022774.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 538874 + ... + 538925.

It is an arithmetic number, because the mean of its divisors is an integer number (5658450).

Almost surely, 2^28022774 is an apocalyptic number.

28022774 is a deficient number, since it is larger than the sum of its proper divisors (17244826).

28022774 is a wasteful number, since it uses less digits than its factorization.

28022774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077814.

The product of its (nonzero) digits is 12544, while the sum is 32.

The square root of 28022774 is about 5293.6541254600. The cubic root of 28022774 is about 303.7412025880.

The spelling of 28022774 in words is "twenty-eight million, twenty-two thousand, seven hundred seventy-four".