298243440 has 120 divisors (see below), whose sum is σ = 1092684528. Its totient is φ = 72299520.

The previous prime is 298243423. The next prime is 298243447. The reversal of 298243440 is 44342892.

298243440 is a `hidden beast` number, since 298 + 24 + 344 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

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 = 298243395 and 298243404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (298243447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10909 + ... + 26748.

Almost surely, 2^298243440 is an apocalyptic number.

298243440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

298243440 is an abundant number, since it is smaller than the sum of its proper divisors (794441088).

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

298243440 is a wasteful number, since it uses less digits than its factorization.

298243440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37687 (or 37678 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 298243440 is about 17269.7261124779. The cubic root of 298243440 is about 668.1238371054.

The spelling of 298243440 in words is "two hundred ninety-eight million, two hundred forty-three thousand, four hundred forty".