28422194 has 4 divisors (see below), whose sum is σ = 42633294. Its totient is φ = 14211096.

The previous prime is 28422187. The next prime is 28422203. The reversal of 28422194 is 49122482.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 22686169 + 5736025 = 4763^2 + 2395^2 .

It is a super-2 number, since 2×28422194² = 1615642223547272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28422194.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7105547 + ... + 7105550.

Almost surely, 2^28422194 is an apocalyptic number.

28422194 is a deficient number, since it is larger than the sum of its proper divisors (14211100).

28422194 is a wasteful number, since it uses less digits than its factorization.

28422194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14211099.

The product of its digits is 9216, while the sum is 32.

The square root of 28422194 is about 5331.2469460718. The cubic root of 28422194 is about 305.1775155823.

The spelling of 28422194 in words is "twenty-eight million, four hundred twenty-two thousand, one hundred ninety-four".