28342017 has 24 divisors (see below), whose sum is σ = 44841888. Its totient is φ = 17107200.

The previous prime is 28341997. The next prime is 28342021. The reversal of 28342017 is 71024382.

It is not a de Polignac number, because 28342017 - 2⁶ = 28341953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28342057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34542 + ... + 35352.

It is an arithmetic number, because the mean of its divisors is an integer number (1868412).

Almost surely, 2^28342017 is an apocalyptic number.

It is an amenable number.

28342017 is a deficient number, since it is larger than the sum of its proper divisors (16499871).

28342017 is a wasteful number, since it uses less digits than its factorization.

28342017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181 (or 1178 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 28342017 is about 5323.7221001852. The cubic root of 28342017 is about 304.8902839269.

Adding to 28342017 its reverse (71024382), we get a palindrome (99366399).

It can be divided in two parts, 2834 and 2017, that added together give a triangular number (4851 = T₉₈).

The spelling of 28342017 in words is "twenty-eight million, three hundred forty-two thousand, seventeen".