298985856 has 128 divisors (see below), whose sum is σ = 865196640. Its totient is φ = 90931200.

The previous prime is 298985839. The next prime is 298985887. The reversal of 298985856 is 658589892.

It is a tau number, because it is divible by the number of its divisors (128).

It is an alternating number because its digits alternate between even and odd.

It is a self number, because there is not a number n which added to its sum of digits gives 298985856.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 503896 + ... + 504488.

Almost surely, 2^298985856 is an apocalyptic number.

298985856 is a gapful number since it is divisible by the number (26) 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 298985856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (432598320).

298985856 is an abundant number, since it is smaller than the sum of its proper divisors (566210784).

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

298985856 is a wasteful number, since it uses less digits than its factorization.

298985856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 712 counting only the distinct ones).

The product of its digits is 12441600, while the sum is 60.

The square root of 298985856 is about 17291.2074766339. The cubic root of 298985856 is about 668.6777635778.

The spelling of 298985856 in words is "two hundred ninety-eight million, nine hundred eighty-five thousand, eight hundred fifty-six".