28222176 has 48 divisors (see below), whose sum is σ = 78445584. Its totient is φ = 8853504.

The previous prime is 28222169. The next prime is 28222177. The reversal of 28222176 is 67122282.

It is a tau number, because it is divible by the number of its divisors (48).

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 in 7 ways as a sum of consecutive naturals, for example, 7015 + ... + 10278.

It is an arithmetic number, because the mean of its divisors is an integer number (1634283).

Almost surely, 2^28222176 is an apocalyptic number.

It is an amenable number.

28222176 is an abundant number, since it is smaller than the sum of its proper divisors (50223408).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28222176 is a wasteful number, since it uses less digits than its factorization.

28222176 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17323 (or 17315 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 28222176 is about 5312.4547998077. The cubic root of 28222176 is about 304.4599454973.

The spelling of 28222176 in words is "twenty-eight million, two hundred twenty-two thousand, one hundred seventy-six".