298137840 has 640 divisors, whose sum is σ = 1331914752. Its totient is φ = 53084160.

The previous prime is 298137839. The next prime is 298137841. The reversal of 298137840 is 48731892.

It is an interprime number because it is at equal distance from previous prime (298137839) and next prime (298137841).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 298137792 and 298137801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298137841) 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 127 ways as a sum of consecutive naturals, for example, 4084044 + ... + 4084116.

Almost surely, 2^298137840 is an apocalyptic number.

298137840 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 298137840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (665957376).

298137840 is an abundant number, since it is smaller than the sum of its proper divisors (1033776912).

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

298137840 is a wasteful number, since it uses less digits than its factorization.

298137840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 298137840 is about 17266.6684684684. The cubic root of 298137840 is about 668.0449728886.

The spelling of 298137840 in words is "two hundred ninety-eight million, one hundred thirty-seven thousand, eight hundred forty".