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398240000 = 285419131
BaseRepresentation
bin10111101111001…
…010100100000000
31000202100200120122
4113233022210000
51303422140000
6103303355412
712603661364
oct2757124400
91022320518
10398240000
11194883674
12b1452b68
1364676492
143ac672a4
1524e67085
hex17bca900

398240000 has 180 divisors, whose sum is σ = 1053600240. Its totient is φ = 149760000.

The previous prime is 398239997. The next prime is 398240021. The reversal of 398240000 is 42893.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 3039935 + ... + 3040065.

Almost surely, 2398240000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 398240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (526800120).

398240000 is an abundant number, since it is smaller than the sum of its proper divisors (655360240).

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

398240000 is an equidigital number, since it uses as much as digits as its factorization.

398240000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186 (or 157 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 398240000 is about 19955.9514932263. The cubic root of 398240000 is about 735.7240616505.

Adding to 398240000 its reverse (42893), we get a palindrome (398282893).

The spelling of 398240000 in words is "three hundred ninety-eight million, two hundred forty thousand".