28163122 has 16 divisors (see below), whose sum is σ = 45581760. Its totient is φ = 12973392.

The previous prime is 28163117. The next prime is 28163123. The reversal of 28163122 is 22136182.

It is a super-2 number, since 2×28163122² = 1586322881573768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28163123) 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, 25963 + ... + 27025.

It is an arithmetic number, because the mean of its divisors is an integer number (2848860).

Almost surely, 2^28163122 is an apocalyptic number.

28163122 is a deficient number, since it is larger than the sum of its proper divisors (17418638).

28163122 is a wasteful number, since it uses less digits than its factorization.

28163122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2097.

The product of its digits is 1152, while the sum is 25.

The square root of 28163122 is about 5306.8938184215. The cubic root of 28163122 is about 304.2474396439.

The spelling of 28163122 in words is "twenty-eight million, one hundred sixty-three thousand, one hundred twenty-two".