28545198 has 16 divisors (see below), whose sum is σ = 62280576. Its totient is φ = 8650040.

The previous prime is 28545197. The next prime is 28545211. The reversal of 28545198 is 89154582.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28545197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216186 + ... + 216317.

It is an arithmetic number, because the mean of its divisors is an integer number (3892536).

Almost surely, 2^28545198 is an apocalyptic number.

28545198 is an abundant number, since it is smaller than the sum of its proper divisors (33735378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28545198 is a wasteful number, since it uses less digits than its factorization.

28545198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 432519.

The product of its digits is 115200, while the sum is 42.

The square root of 28545198 is about 5342.7706295517. The cubic root of 28545198 is about 305.6171254783.

The spelling of 28545198 in words is "twenty-eight million, five hundred forty-five thousand, one hundred ninety-eight".