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38683712280 = 2335674811407
BaseRepresentation
bin100100000001101110…
…101001101100011000
310200211221020012012110
4210001232221230120
51113211012243110
625434314112320
72536422062163
oct440156515430
9120757205173
1038683712280
1115450a46654
1275b711b6a0
133856463aa5
141c2d84aada
15101617aa20
hex901ba9b18

38683712280 has 64 divisors (see below), whose sum is σ = 117783267840. Its totient is φ = 10161689472.

The previous prime is 38683712273. The next prime is 38683712293. The reversal of 38683712280 is 8221738683.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2397664 + ... + 2413743.

It is an arithmetic number, because the mean of its divisors is an integer number (1840363560).

Almost surely, 238683712280 is an apocalyptic number.

38683712280 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38683712280 is an abundant number, since it is smaller than the sum of its proper divisors (79099555560).

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

38683712280 is a wasteful number, since it uses less digits than its factorization.

38683712280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4811488 (or 4811484 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 38683712280 in words is "thirty-eight billion, six hundred eighty-three million, seven hundred twelve thousand, two hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 67 120 134 201 268 335 402 536 670 804 1005 1340 1608 2010 2680 4020 8040 4811407 9622814 14434221 19245628 24057035 28868442 38491256 48114070 57736884 72171105 96228140 115473768 144342210 192456280 288684420 322364269 577368840 644728538 967092807 1289457076 1611821345 1934185614 2578914152 3223642690 3868371228 4835464035 6447285380 7736742456 9670928070 12894570760 19341856140 38683712280