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242807292 = 2232713137541
BaseRepresentation
bin11100111100011…
…11000111111100
3121220212212222200
432132033013330
5444124313132
640032111500
76005553660
oct1636170774
9556785880
10242807292
11115070792
1269395590
133b3c4870
14243668a0
15164b2d7c
hexe78f1fc

242807292 has 144 divisors (see below), whose sum is σ = 762320832. Its totient is φ = 63452160.

The previous prime is 242807269. The next prime is 242807293. The reversal of 242807292 is 292708242.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (242807293) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 448542 + ... + 449082.

Almost surely, 2242807292 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 242807292, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381160416).

242807292 is an abundant number, since it is smaller than the sum of its proper divisors (519513540).

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

242807292 is a wasteful number, since it uses less digits than its factorization.

242807292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708 (or 703 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 242807292 is about 15582.2749301891. The cubic root of 242807292 is about 623.8601449391.

The spelling of 242807292 in words is "two hundred forty-two million, eight hundred seven thousand, two hundred ninety-two".

Divisors: 1 2 3 4 6 7 9 12 13 14 18 21 26 28 36 39 42 52 63 78 84 91 117 126 137 156 182 234 252 273 274 364 411 468 541 546 548 819 822 959 1082 1092 1233 1623 1638 1644 1781 1918 2164 2466 2877 3246 3276 3562 3787 3836 4869 4932 5343 5754 6492 7033 7124 7574 8631 9738 10686 11361 11508 12467 14066 15148 16029 17262 19476 21099 21372 22722 24934 28132 32058 34083 34524 37401 42198 45444 49231 49868 63297 64116 68166 74117 74802 84396 98462 112203 126594 136332 147693 148234 149604 196924 222351 224406 253188 295386 296468 443079 444702 448812 518819 590772 667053 886158 889404 963521 1037638 1334106 1556457 1772316 1927042 2075276 2668212 2890563 3112914 3854084 4669371 5781126 6225828 6744647 8671689 9338742 11562252 13489294 17343378 18677484 20233941 26978588 34686756 40467882 60701823 80935764 121403646 242807292