298499696640 has 480 divisors, whose sum is σ = 1116504829440. Its totient is φ = 76134187008.

The previous prime is 298499696629. The next prime is 298499696723. The reversal of 298499696640 is 46696994892.

298499696640 is a `hidden beast` number, since 2 + 9 + 8 + 499 + 6 + 96 + 6 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (480).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19069297 + ... + 19084943.

It is an arithmetic number, because the mean of its divisors is an integer number (2326051728).

Almost surely, 2^298499696640 is an apocalyptic number.

298499696640 is a gapful number since it is divisible by the number (20) 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 298499696640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (558252414720).

298499696640 is an abundant number, since it is smaller than the sum of its proper divisors (818005132800).

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

298499696640 is a wasteful number, since it uses less digits than its factorization.

298499696640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15709 (or 15680 counting only the distinct ones).

The product of its (nonzero) digits is 362797056, while the sum is 72.

The spelling of 298499696640 in words is "two hundred ninety-eight billion, four hundred ninety-nine million, six hundred ninety-six thousand, six hundred forty".