28132122 has 16 divisors (see below), whose sum is σ = 59225760. Its totient is φ = 8883792.

The previous prime is 28132121. The next prime is 28132129. The reversal of 28132122 is 22123182.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (28132121) 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, 123273 + ... + 123500.

It is an arithmetic number, because the mean of its divisors is an integer number (3701610).

Almost surely, 2^28132122 is an apocalyptic number.

28132122 is an abundant number, since it is smaller than the sum of its proper divisors (31093638).

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

28132122 is a wasteful number, since it uses less digits than its factorization.

28132122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246797.

The product of its digits is 384, while the sum is 21.

The square root of 28132122 is about 5303.9722849955. The cubic root of 28132122 is about 304.1357672079.

The spelling of 28132122 in words is "twenty-eight million, one hundred thirty-two thousand, one hundred twenty-two".