28500398 has 8 divisors (see below), whose sum is σ = 45265392. Its totient is φ = 13411936.

The previous prime is 28500389. The next prime is 28500401. The reversal of 28500398 is 89300582.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419090 + ... + 419157.

It is an arithmetic number, because the mean of its divisors is an integer number (5658174).

Almost surely, 2^28500398 is an apocalyptic number.

28500398 is a deficient number, since it is larger than the sum of its proper divisors (16764994).

28500398 is a wasteful number, since it uses less digits than its factorization.

28500398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 838266.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 28500398 is about 5338.5764020008. The cubic root of 28500398 is about 305.4571590954.

The spelling of 28500398 in words is "twenty-eight million, five hundred thousand, three hundred ninety-eight".