28976121 has 24 divisors (see below), whose sum is σ = 44304000. Its totient is φ = 18198432.

The previous prime is 28976119. The next prime is 28976137. The reversal of 28976121 is 12167982.

It is not a de Polignac number, because 28976121 - 2¹ = 28976119 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28976161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40515 + ... + 41223.

It is an arithmetic number, because the mean of its divisors is an integer number (1846000).

Almost surely, 2^28976121 is an apocalyptic number.

It is an amenable number.

28976121 is a deficient number, since it is larger than the sum of its proper divisors (15327879).

28976121 is a wasteful number, since it uses less digits than its factorization.

28976121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973 (or 970 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 28976121 is about 5382.9472410567. The cubic root of 28976121 is about 307.1473331445.

The spelling of 28976121 in words is "twenty-eight million, nine hundred seventy-six thousand, one hundred twenty-one".