28204343 has 8 divisors (see below), whose sum is σ = 30242880. Its totient is φ = 26208000.

The previous prime is 28204339. The next prime is 28204349. The reversal of 28204343 is 34340282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 28204343 - 2² = 28204339 is a prime.

It is a super-3 number, since 3×28204343³ (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 (28204349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9158 + ... + 11843.

It is an arithmetic number, because the mean of its divisors is an integer number (3780360).

Almost surely, 2^28204343 is an apocalyptic number.

28204343 is a deficient number, since it is larger than the sum of its proper divisors (2038537).

28204343 is a wasteful number, since it uses less digits than its factorization.

28204343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21097.

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 28204343 is about 5310.7761203048. The cubic root of 28204343 is about 304.3958047049.

The spelling of 28204343 in words is "twenty-eight million, two hundred four thousand, three hundred forty-three".