28343066 has 4 divisors (see below), whose sum is σ = 42514602. Its totient is φ = 14171532.

The previous prime is 28343059. The next prime is 28343071. The reversal of 28343066 is 66034382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66034382 = 2 ⋅33017191.

It can be written as a sum of positive squares in only one way, i.e., 27300625 + 1042441 = 5225^2 + 1021^2 .

It is an unprimeable number.

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, 7085765 + ... + 7085768.

Almost surely, 2^28343066 is an apocalyptic number.

28343066 is a deficient number, since it is larger than the sum of its proper divisors (14171536).

28343066 is a wasteful number, since it uses less digits than its factorization.

28343066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14171535.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 28343066 is about 5323.8206205694. The cubic root of 28343066 is about 304.8940454324.

The spelling of 28343066 in words is "twenty-eight million, three hundred forty-three thousand, sixty-six".