298704840 has 128 divisors (see below), whose sum is σ = 1057259520. Its totient is φ = 66067200.

The previous prime is 298704839. The next prime is 298704851. The reversal of 298704840 is 48407892.

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 = 298704792 and 298704801.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20305 + ... + 31775.

It is an arithmetic number, because the mean of its divisors is an integer number (8259840).

Almost surely, 2^298704840 is an apocalyptic number.

298704840 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 298704840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (528629760).

298704840 is an abundant number, since it is smaller than the sum of its proper divisors (758554680).

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

298704840 is a wasteful number, since it uses less digits than its factorization.

298704840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11523 (or 11519 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 298704840 is about 17283.0795866940. The cubic root of 298704840 is about 668.4682017662.

The spelling of 298704840 in words is "two hundred ninety-eight million, seven hundred four thousand, eight hundred forty".