28222174 has 4 divisors (see below), whose sum is σ = 42333264. Its totient is φ = 14111086.

The previous prime is 28222169. The next prime is 28222177. The reversal of 28222174 is 47122282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 47122282 = 2 ⋅23561141.

It is a super-2 number, since 2×28222174² = 1592982210572552, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28222177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7055542 + ... + 7055545.

It is an arithmetic number, because the mean of its divisors is an integer number (10583316).

Almost surely, 2^28222174 is an apocalyptic number.

28222174 is a deficient number, since it is larger than the sum of its proper divisors (14111090).

28222174 is a wasteful number, since it uses less digits than its factorization.

28222174 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14111089.

The product of its digits is 3584, while the sum is 28.

The square root of 28222174 is about 5312.4546115708. The cubic root of 28222174 is about 304.4599383053.

The spelling of 28222174 in words is "twenty-eight million, two hundred twenty-two thousand, one hundred seventy-four".