28334651 has 4 divisors (see below), whose sum is σ = 29248704. Its totient is φ = 27420600.

The previous prime is 28334639. The next prime is 28334671. The reversal of 28334651 is 15643382.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15643382 = 2 ⋅7821691.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28334651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28334671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 456980 + ... + 457041.

It is an arithmetic number, because the mean of its divisors is an integer number (7312176).

Almost surely, 2^28334651 is an apocalyptic number.

28334651 is a deficient number, since it is larger than the sum of its proper divisors (914053).

28334651 is an equidigital number, since it uses as much as digits as its factorization.

28334651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914052.

The product of its digits is 17280, while the sum is 32.

The square root of 28334651 is about 5323.0302460159. The cubic root of 28334651 is about 304.8638683002.

The spelling of 28334651 in words is "twenty-eight million, three hundred thirty-four thousand, six hundred fifty-one".