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38504830 = 257131719131
BaseRepresentation
bin1001001011100…
…0100101111110
32200110020200211
42102320211332
534324123310
63453143034
7645166660
oct222704576
980406624
1038504830
111a80a281
1210a8aa7a
137c92130
145184530
1535a8c8a
hex24b897e

38504830 has 128 divisors (see below), whose sum is σ = 95800320. Its totient is φ = 10782720.

The previous prime is 38504819. The next prime is 38504831. The reversal of 38504830 is 3840583.

It is a junction number, because it is equal to n+sod(n) for n = 38504792 and 38504801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38504831) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 293865 + ... + 293995.

It is an arithmetic number, because the mean of its divisors is an integer number (748440).

Almost surely, 238504830 is an apocalyptic number.

38504830 is an abundant number, since it is smaller than the sum of its proper divisors (57295490).

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

38504830 is a wasteful number, since it uses less digits than its factorization.

38504830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194.

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 38504830 is about 6205.2260232807. The cubic root of 38504830 is about 337.6797908087.

The spelling of 38504830 in words is "thirty-eight million, five hundred four thousand, eight hundred thirty".

Divisors: 1 2 5 7 10 13 14 17 19 26 34 35 38 65 70 85 91 95 119 130 131 133 170 182 190 221 238 247 262 266 323 442 455 494 595 646 655 665 910 917 1105 1190 1235 1310 1330 1547 1615 1703 1729 1834 2210 2227 2261 2470 2489 3094 3230 3406 3458 4199 4454 4522 4585 4978 7735 8398 8515 8645 9170 11135 11305 11921 12445 15470 15589 17030 17290 17423 20995 22270 22610 23842 24890 28951 29393 31178 32357 34846 41990 42313 57902 58786 59605 64714 77945 84626 87115 119210 144755 146965 155890 161785 174230 202657 211565 226499 289510 293930 296191 323570 405314 423130 452998 550069 592382 1013285 1100138 1132495 1480955 2026570 2264990 2750345 2961910 3850483 5500690 7700966 19252415 38504830