28068471 has 16 divisors (see below), whose sum is σ = 41868000. Its totient is φ = 18584064.

The previous prime is 28068461. The next prime is 28068473. The reversal of 28068471 is 17486082.

It is not a de Polignac number, because 28068471 - 2¹⁸ = 27806327 is a prime.

It is a super-3 number, since 3×28068471³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28068473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 535 + ... + 7511.

It is an arithmetic number, because the mean of its divisors is an integer number (2616750).

Almost surely, 2^28068471 is an apocalyptic number.

28068471 is a deficient number, since it is larger than the sum of its proper divisors (13799529).

28068471 is a wasteful number, since it uses less digits than its factorization.

28068471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7135 (or 7129 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 28068471 is about 5297.9685729532. The cubic root of 28068471 is about 303.9062174646.

The spelling of 28068471 in words is "twenty-eight million, sixty-eight thousand, four hundred seventy-one".