28979122 has 8 divisors (see below), whose sum is σ = 43899372. Its totient is φ = 14346000.

The previous prime is 28979117. The next prime is 28979129. The reversal of 28979122 is 22197982.

It can be written as a sum of positive squares in 2 ways, for example, as 23030401 + 5948721 = 4799^2 + 2439^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (28979129) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71529 + ... + 71932.

Almost surely, 2^28979122 is an apocalyptic number.

28979122 is a deficient number, since it is larger than the sum of its proper divisors (14920250).

28979122 is a wasteful number, since it uses less digits than its factorization.

28979122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143564.

The product of its digits is 36288, while the sum is 40.

The square root of 28979122 is about 5383.2259844818. The cubic root of 28979122 is about 307.1579363273.

The spelling of 28979122 in words is "twenty-eight million, nine hundred seventy-nine thousand, one hundred twenty-two".