28167422 has 4 divisors (see below), whose sum is σ = 42251136. Its totient is φ = 14083710.

The previous prime is 28167383. The next prime is 28167427. The reversal of 28167422 is 22476182.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28167427) by changing a digit.

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 as a sum of consecutive naturals, namely, 7041854 + ... + 7041857.

It is an arithmetic number, because the mean of its divisors is an integer number (10562784).

Almost surely, 2^28167422 is an apocalyptic number.

28167422 is a deficient number, since it is larger than the sum of its proper divisors (14083714).

28167422 is a wasteful number, since it uses less digits than its factorization.

28167422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14083713.

The product of its digits is 10752, while the sum is 32.

The square root of 28167422 is about 5307.2989363706. The cubic root of 28167422 is about 304.2629232186.

The spelling of 28167422 in words is "twenty-eight million, one hundred sixty-seven thousand, four hundred twenty-two".