28006198 has 32 divisors (see below), whose sum is σ = 47809440. Its totient is φ = 12192000.

The previous prime is 28006193. The next prime is 28006213. The reversal of 28006198 is 89160082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28006193) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54768 + ... + 55276.

It is an arithmetic number, because the mean of its divisors is an integer number (1494045).

Almost surely, 2^28006198 is an apocalyptic number.

28006198 is a deficient number, since it is larger than the sum of its proper divisors (19803242).

28006198 is a wasteful number, since it uses less digits than its factorization.

28006198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624.

The product of its (nonzero) digits is 6912, while the sum is 34.

The square root of 28006198 is about 5292.0882456739. The cubic root of 28006198 is about 303.6813012232.

It can be divided in two parts, 2800 and 6198, that added together give a palindrome (8998).

The spelling of 28006198 in words is "twenty-eight million, six thousand, one hundred ninety-eight".