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242968380 = 223529472971
BaseRepresentation
bin11100111101101…
…10011100111100
3121221012001221220
432132312130330
5444144442010
640035353340
76010124424
oct1636663474
9557161856
10242968380
11115170816
1269452850
133b44cc95
14243a9484
15164e5970
hexe7b673c

242968380 has 96 divisors (see below), whose sum is σ = 718986240. Its totient is φ = 61205760.

The previous prime is 242968379. The next prime is 242968387. The reversal of 242968380 is 83869242.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242968387) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80295 + ... + 83265.

It is an arithmetic number, because the mean of its divisors is an integer number (7489440).

Almost surely, 2242968380 is an apocalyptic number.

242968380 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 242968380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (359493120).

242968380 is an abundant number, since it is smaller than the sum of its proper divisors (476017860).

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

242968380 is a wasteful number, since it uses less digits than its factorization.

242968380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3059 (or 3057 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 42.

The square root of 242968380 is about 15587.4430231517. The cubic root of 242968380 is about 623.9980789717.

The spelling of 242968380 in words is "two hundred forty-two million, nine hundred sixty-eight thousand, three hundred eighty".

Divisors: 1 2 3 4 5 6 10 12 15 20 29 30 47 58 60 87 94 116 141 145 174 188 235 282 290 348 435 470 564 580 705 870 940 1363 1410 1740 2726 2820 2971 4089 5452 5942 6815 8178 8913 11884 13630 14855 16356 17826 20445 27260 29710 35652 40890 44565 59420 81780 86159 89130 139637 172318 178260 258477 279274 344636 418911 430795 516954 558548 698185 837822 861590 1033908 1292385 1396370 1675644 1723180 2094555 2584770 2792740 4049473 4189110 5169540 8098946 8378220 12148419 16197892 20247365 24296838 40494730 48593676 60742095 80989460 121484190 242968380