298391040 has 200 divisors, whose sum is σ = 1069485120. Its totient is φ = 79515648.

The previous prime is 298391033. The next prime is 298391047. The reversal of 298391040 is 40193892.

It is an interprime number because it is at equal distance from previous prime (298391033) and next prime (298391047).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 298390986 and 298391004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298391047) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 206641 + ... + 208079.

Almost surely, 2^298391040 is an apocalyptic number.

298391040 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 298391040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (534742560).

298391040 is an abundant number, since it is smaller than the sum of its proper divisors (771094080).

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

298391040 is an equidigital number, since it uses as much as digits as its factorization.

298391040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1474 (or 1449 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 298391040 is about 17273.9989579715. The cubic root of 298391040 is about 668.2340365839.

Adding to 298391040 its sum of digits (36), we get a square (298391076 = 17274²).

The spelling of 298391040 in words is "two hundred ninety-eight million, three hundred ninety-one thousand, forty".