28952993 has 2 divisors, whose sum is σ = 28952994. Its totient is φ = 28952992.

The previous prime is 28952971. The next prime is 28953007. The reversal of 28952993 is 39925982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17447329 + 11505664 = 4177^2 + 3392^2 .

It is a cyclic number.

It is not a de Polignac number, because 28952993 - 2¹⁶ = 28887457 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (28952293) 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, 14476496 + 14476497.

It is an arithmetic number, because the mean of its divisors is an integer number (14476497).

Almost surely, 2^28952993 is an apocalyptic number.

It is an amenable number.

28952993 is a deficient number, since it is larger than the sum of its proper divisors (1).

28952993 is an equidigital number, since it uses as much as digits as its factorization.

28952993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 349920, while the sum is 47.

The square root of 28952993 is about 5380.7985466843. The cubic root of 28952993 is about 307.0655923396.

The spelling of 28952993 in words is "twenty-eight million, nine hundred fifty-two thousand, nine hundred ninety-three".