28932117 has 32 divisors (see below), whose sum is σ = 42318720. Its totient is φ = 17521920.

The previous prime is 28932097. The next prime is 28932121. The reversal of 28932117 is 71123982.

It is not a de Polignac number, because 28932117 - 2⁷ = 28931989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28930117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 184203 + ... + 184359.

It is an arithmetic number, because the mean of its divisors is an integer number (1322460).

Almost surely, 2^28932117 is an apocalyptic number.

It is an amenable number.

28932117 is a deficient number, since it is larger than the sum of its proper divisors (13386603).

28932117 is a wasteful number, since it uses less digits than its factorization.

28932117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293.

The product of its digits is 6048, while the sum is 33.

The square root of 28932117 is about 5378.8583361156. The cubic root of 28932117 is about 306.9917733439.

The spelling of 28932117 in words is "twenty-eight million, nine hundred thirty-two thousand, one hundred seventeen".