28233451 has 2 divisors, whose sum is σ = 28233452. Its totient is φ = 28233450.

The previous prime is 28233437. The next prime is 28233473. The reversal of 28233451 is 15433282.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 28233451 - 2¹¹ = 28231403 is a prime.

It is not a weakly prime, because it can be changed into another prime (28233421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14116725 + 14116726.

It is an arithmetic number, because the mean of its divisors is an integer number (14116726).

Almost surely, 2^28233451 is an apocalyptic number.

28233451 is a deficient number, since it is larger than the sum of its proper divisors (1).

28233451 is an equidigital number, since it uses as much as digits as its factorization.

28233451 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 28.

The square root of 28233451 is about 5313.5158793402. The cubic root of 28233451 is about 304.5004848807.

It can be divided in two parts, 282 and 33451, that added together give a palindrome (33733).

The spelling of 28233451 in words is "twenty-eight million, two hundred thirty-three thousand, four hundred fifty-one".