28967897 has 8 divisors (see below), whose sum is σ = 34248000. Its totient is φ = 23973264.

The previous prime is 28967893. The next prime is 28967903. The reversal of 28967897 is 79876982.

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

It is not a de Polignac number, because 28967897 - 2² = 28967893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28967891) 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 7 ways as a sum of consecutive naturals, for example, 71147 + ... + 71552.

It is an arithmetic number, because the mean of its divisors is an integer number (4281000).

Almost surely, 2^28967897 is an apocalyptic number.

It is an amenable number.

28967897 is a deficient number, since it is larger than the sum of its proper divisors (5280103).

28967897 is a wasteful number, since it uses less digits than its factorization.

28967897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142735.

The product of its digits is 3048192, while the sum is 56.

The square root of 28967897 is about 5382.1832930513. The cubic root of 28967897 is about 307.1182722190.

It can be divided in two parts, 289 and 67897, that added together give a palindrome (68186).

The spelling of 28967897 in words is "twenty-eight million, nine hundred sixty-seven thousand, eight hundred ninety-seven".