298021864140 has 1152 divisors, whose sum is σ = 1284440371200. Its totient is φ = 56382842880.

The previous prime is 298021864109. The next prime is 298021864201. The reversal of 298021864140 is 41468120892.

298021864140 is a `hidden beast` number, since 298 + 0 + 218 + 6 + 4 + 140 = 666.

It is a super-3 number, since 3×298021864140³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 298918122 + ... + 298919118.

It is an arithmetic number, because the mean of its divisors is an integer number (1114965600).

Almost surely, 2^298021864140 is an apocalyptic number.

298021864140 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 298021864140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (642220185600).

298021864140 is an abundant number, since it is smaller than the sum of its proper divisors (986418507060).

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

298021864140 is a wasteful number, since it uses less digits than its factorization.

298021864140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1132 (or 1117 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 45.

The spelling of 298021864140 in words is "two hundred ninety-eight billion, twenty-one million, eight hundred sixty-four thousand, one hundred forty".