28198355 has 8 divisors (see below), whose sum is σ = 34558272. Its totient is φ = 22078528.

The previous prime is 28198343. The next prime is 28198361. The reversal of 28198355 is 55389182.

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

It is a cyclic number.

It is not a de Polignac number, because 28198355 - 2⁸ = 28198099 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59762 + ... + 60231.

It is an arithmetic number, because the mean of its divisors is an integer number (4319784).

Almost surely, 2^28198355 is an apocalyptic number.

28198355 is a deficient number, since it is larger than the sum of its proper divisors (6359917).

28198355 is a wasteful number, since it uses less digits than its factorization.

28198355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120045.

The product of its digits is 86400, while the sum is 41.

The square root of 28198355 is about 5310.2123309713. The cubic root of 28198355 is about 304.3742613196.

The spelling of 28198355 in words is "twenty-eight million, one hundred ninety-eight thousand, three hundred fifty-five".