298172090 has 16 divisors (see below), whose sum is σ = 549801000. Its totient is φ = 116359680.

The previous prime is 298172071. The next prime is 298172093. The reversal of 298172090 is 90271892.

It can be written as a sum of positive squares in 4 ways, for example, as 109851361 + 188320729 = 10481^2 + 13723^2 .

It is not an unprimeable number, because it can be changed into a prime (298172093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 363215 + ... + 364034.

Almost surely, 2^298172090 is an apocalyptic number.

298172090 is a deficient number, since it is larger than the sum of its proper divisors (251628910).

298172090 is a wasteful number, since it uses less digits than its factorization.

298172090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 727297.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 298172090 is about 17267.6602352490. The cubic root of 298172090 is about 668.0705535218.

The spelling of 298172090 in words is "two hundred ninety-eight million, one hundred seventy-two thousand, ninety".