28923417 has 12 divisors (see below), whose sum is σ = 41870400. Its totient is φ = 19239768.

The previous prime is 28923413. The next prime is 28923421. The reversal of 28923417 is 71432982.

It is an interprime number because it is at equal distance from previous prime (28923413) and next prime (28923421).

It is not a de Polignac number, because 28923417 - 2² = 28923413 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28923413) 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 11 ways as a sum of consecutive naturals, for example, 1084 + ... + 7682.

It is an arithmetic number, because the mean of its divisors is an integer number (3489200).

Almost surely, 2^28923417 is an apocalyptic number.

It is an amenable number.

28923417 is a deficient number, since it is larger than the sum of its proper divisors (12946983).

28923417 is a wasteful number, since it uses less digits than its factorization.

28923417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7092 (or 7089 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 28923417 is about 5378.0495535092. The cubic root of 28923417 is about 306.9609990527.

The spelling of 28923417 in words is "twenty-eight million, nine hundred twenty-three thousand, four hundred seventeen".