28334471 has 4 divisors (see below), whose sum is σ = 30910344. Its totient is φ = 25758600.

The previous prime is 28334429. The next prime is 28334473. The reversal of 28334471 is 17443382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28334471 - 2⁶ = 28334407 is a prime.

It is a super-3 number, since 3×28334471³ (a number of 23 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28334473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1287920 + ... + 1287941.

It is an arithmetic number, because the mean of its divisors is an integer number (7727586).

Almost surely, 2^28334471 is an apocalyptic number.

28334471 is a deficient number, since it is larger than the sum of its proper divisors (2575873).

28334471 is a wasteful number, since it uses less digits than its factorization.

28334471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575872.

The product of its digits is 16128, while the sum is 32.

The square root of 28334471 is about 5323.0133383263. The cubic root of 28334471 is about 304.8632227348.

The spelling of 28334471 in words is "twenty-eight million, three hundred thirty-four thousand, four hundred seventy-one".