298078891 has 8 divisors (see below), whose sum is σ = 325494000. Its totient is φ = 270716640.

The previous prime is 298078877. The next prime is 298078909. The reversal of 298078891 is 198870892.

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 298078891 - 2⁷ = 298078763 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (298078811) 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, 916 + ... + 24433.

It is an arithmetic number, because the mean of its divisors is an integer number (40686750).

Almost surely, 2^298078891 is an apocalyptic number.

298078891 is a deficient number, since it is larger than the sum of its proper divisors (27415109).

298078891 is a wasteful number, since it uses less digits than its factorization.

298078891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26429.

The product of its (nonzero) digits is 580608, while the sum is 52.

The square root of 298078891 is about 17264.9613668841. The cubic root of 298078891 is about 668.0009404830. Note that the first 3 decimals are identical.

The spelling of 298078891 in words is "two hundred ninety-eight million, seventy-eight thousand, eight hundred ninety-one".