28343351 has 4 divisors (see below), whose sum is σ = 28547400. Its totient is φ = 28139304.

The previous prime is 28343339. The next prime is 28343387. The reversal of 28343351 is 15334382.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28343351 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28343311) 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, 101816 + ... + 102093.

It is an arithmetic number, because the mean of its divisors is an integer number (7136850).

Almost surely, 2^28343351 is an apocalyptic number.

28343351 is a deficient number, since it is larger than the sum of its proper divisors (204049).

28343351 is a wasteful number, since it uses less digits than its factorization.

28343351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204048.

The product of its digits is 8640, while the sum is 29.

The square root of 28343351 is about 5323.8473869937. The cubic root of 28343351 is about 304.8950673698.

It can be divided in two parts, 283 and 43351, that added together give a palindrome (43634).

The spelling of 28343351 in words is "twenty-eight million, three hundred forty-three thousand, three hundred fifty-one".