28923667 has 2 divisors, whose sum is σ = 28923668. Its totient is φ = 28923666.

The previous prime is 28923617. The next prime is 28923679. The reversal of 28923667 is 76632982.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28923667 is a prime.

It is not a weakly prime, because it can be changed into another prime (28923607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14461833 + 14461834.

It is an arithmetic number, because the mean of its divisors is an integer number (14461834).

Almost surely, 2^28923667 is an apocalyptic number.

28923667 is a deficient number, since it is larger than the sum of its proper divisors (1).

28923667 is an equidigital number, since it uses as much as digits as its factorization.

28923667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 43.

The square root of 28923667 is about 5378.0727960860. The cubic root of 28923667 is about 306.9618834575.

The spelling of 28923667 in words is "twenty-eight million, nine hundred twenty-three thousand, six hundred sixty-seven".