28662929 has 2 divisors, whose sum is σ = 28662930. Its totient is φ = 28662928.

The previous prime is 28662923. The next prime is 28662947. The reversal of 28662929 is 92926682.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28462225 + 200704 = 5335^2 + 448^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28662929 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28662929.

It is not a weakly prime, because it can be changed into another prime (28662923) 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 as a sum of consecutive naturals, namely, 14331464 + 14331465.

It is an arithmetic number, because the mean of its divisors is an integer number (14331465).

Almost surely, 2^28662929 is an apocalyptic number.

It is an amenable number.

28662929 is a deficient number, since it is larger than the sum of its proper divisors (1).

28662929 is an equidigital number, since it uses as much as digits as its factorization.

28662929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 44.

The square root of 28662929 is about 5353.7770779142. Note that the first 3 decimals coincide. The cubic root of 28662929 is about 306.0367086837.

The spelling of 28662929 in words is "twenty-eight million, six hundred sixty-two thousand, nine hundred twenty-nine".