28863398 has 8 divisors (see below), whose sum is σ = 43418808. Its totient is φ = 14390464.

The previous prime is 28863391. The next prime is 28863403. The reversal of 28863398 is 89336882.

It is a happy number.

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 (28863391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19736 + ... + 21147.

It is an arithmetic number, because the mean of its divisors is an integer number (5427351).

Almost surely, 2^28863398 is an apocalyptic number.

28863398 is a deficient number, since it is larger than the sum of its proper divisors (14555410).

28863398 is a wasteful number, since it uses less digits than its factorization.

28863398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41238.

The product of its digits is 497664, while the sum is 47.

The square root of 28863398 is about 5372.4666588077. The cubic root of 28863398 is about 306.7485270334.

The spelling of 28863398 in words is "twenty-eight million, eight hundred sixty-three thousand, three hundred ninety-eight".