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243120352 = 25193112899
BaseRepresentation
bin11100111110110…
…11100011100000
3121221110210102111
432133123203200
5444214322402
640042525104
76011326456
oct1637334340
9557423374
10243120352
11115264a12
1269506794
133b4a41c7
14244089d6
15165259d7
hexe7db8e0

243120352 has 48 divisors (see below), whose sum is σ = 520128000. Its totient is φ = 111438720.

The previous prime is 243120341. The next prime is 243120359. The reversal of 243120352 is 253021342.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (243120359) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12399 + ... + 25297.

It is an arithmetic number, because the mean of its divisors is an integer number (10836000).

Almost surely, 2243120352 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 243120352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260064000).

243120352 is an abundant number, since it is smaller than the sum of its proper divisors (277007648).

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

243120352 is a wasteful number, since it uses less digits than its factorization.

243120352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12959 (or 12951 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 243120352 is about 15592.3170824608. The cubic root of 243120352 is about 624.1281514136.

Adding to 243120352 its reverse (253021342), we get a palindrome (496141694).

The spelling of 243120352 in words is "two hundred forty-three million, one hundred twenty thousand, three hundred fifty-two".

Divisors: 1 2 4 8 16 19 31 32 38 62 76 124 152 248 304 496 589 608 992 1178 2356 4712 9424 12899 18848 25798 51596 103192 206384 245081 399869 412768 490162 799738 980324 1599476 1960648 3198952 3921296 6397904 7597511 7842592 12795808 15195022 30390044 60780088 121560176 243120352