298153440 has 192 divisors, whose sum is σ = 1124020800. Its totient is φ = 73377792.

The previous prime is 298153423. The next prime is 298153451. The reversal of 298153440 is 44351892.

298153440 is a `hidden beast` number, since 2 + 9 + 81 + 534 + 40 = 666.

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 = 298153395 and 298153404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53506 + ... + 58814.

It is an arithmetic number, because the mean of its divisors is an integer number (5854275).

Almost surely, 2^298153440 is an apocalyptic number.

298153440 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 298153440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (562010400).

298153440 is an abundant number, since it is smaller than the sum of its proper divisors (825867360).

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

298153440 is a wasteful number, since it uses less digits than its factorization.

298153440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5346 (or 5332 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 298153440 is about 17267.1201999639. The cubic root of 298153440 is about 668.0566244564.

The spelling of 298153440 in words is "two hundred ninety-eight million, one hundred fifty-three thousand, four hundred forty".