28917254 has 8 divisors (see below), whose sum is σ = 43425840. Its totient is φ = 14441976.

The previous prime is 28917253. The next prime is 28917269. The reversal of 28917254 is 45271982.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28917253) 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, 6029 + ... + 9704.

It is an arithmetic number, because the mean of its divisors is an integer number (5428230).

Almost surely, 2^28917254 is an apocalyptic number.

28917254 is a deficient number, since it is larger than the sum of its proper divisors (14508586).

28917254 is a wasteful number, since it uses less digits than its factorization.

28917254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16654.

The product of its digits is 40320, while the sum is 38.

The square root of 28917254 is about 5377.4765457415. The cubic root of 28917254 is about 306.9391950934.

The spelling of 28917254 in words is "twenty-eight million, nine hundred seventeen thousand, two hundred fifty-four".