28718246 has 4 divisors (see below), whose sum is σ = 43077372. Its totient is φ = 14359122.

The previous prime is 28718243. The next prime is 28718267. The reversal of 28718246 is 64281782.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 64281782 = 2 ⋅32140891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28718243) 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 as a sum of consecutive naturals, namely, 7179560 + ... + 7179563.

It is an arithmetic number, because the mean of its divisors is an integer number (10769343).

Almost surely, 2^28718246 is an apocalyptic number.

28718246 is a deficient number, since it is larger than the sum of its proper divisors (14359126).

28718246 is a wasteful number, since it uses less digits than its factorization.

28718246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14359125.

The product of its digits is 43008, while the sum is 38.

The square root of 28718246 is about 5358.9407535445. The cubic root of 28718246 is about 306.2334570545.

The spelling of 28718246 in words is "twenty-eight million, seven hundred eighteen thousand, two hundred forty-six".