28817398 has 8 divisors (see below), whose sum is σ = 43420608. Its totient is φ = 14343864.

The previous prime is 28817381. The next prime is 28817401. The reversal of 28817398 is 89371882.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31861 + ... + 32752.

It is an arithmetic number, because the mean of its divisors is an integer number (5427576).

Almost surely, 2^28817398 is an apocalyptic number.

28817398 is a deficient number, since it is larger than the sum of its proper divisors (14603210).

28817398 is a wasteful number, since it uses less digits than its factorization.

28817398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64838.

The product of its digits is 193536, while the sum is 46.

The square root of 28817398 is about 5368.1838642133. The cubic root of 28817398 is about 306.5854839192.

The spelling of 28817398 in words is "twenty-eight million, eight hundred seventeen thousand, three hundred ninety-eight".