298987668 has 72 divisors (see below), whose sum is σ = 873512640. Its totient is φ = 84458880.

The previous prime is 298987631. The next prime is 298987669. The reversal of 298987668 is 866789892.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298987669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15763 + ... + 29093.

It is an arithmetic number, because the mean of its divisors is an integer number (12132120).

Almost surely, 2^298987668 is an apocalyptic number.

298987668 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 298987668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (436756320).

298987668 is an abundant number, since it is smaller than the sum of its proper divisors (574524972).

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

298987668 is a wasteful number, since it uses less digits than its factorization.

298987668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13437 (or 13432 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 63.

The square root of 298987668 is about 17291.2598731267. The cubic root of 298987668 is about 668.6791144128.

The spelling of 298987668 in words is "two hundred ninety-eight million, nine hundred eighty-seven thousand, six hundred sixty-eight".