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38678861883872 = 257434015662571
BaseRepresentation
bin10001100101101100111111…
…10100101010100111100000
312001221122220101111000000102
420302312133310222213200
520032203302120240442
6214132453541241532
711101312153251320
oct1062663764524740
9161848811430012
1038678861883872
11113626821a5421
1244082807032a8
13187752a08a802
1497a0d1827280
154711d51b6232
hex232d9fd2a9e0

38678861883872 has 48 divisors (see below), whose sum is σ = 89051333196672. Its totient is φ = 16191151482240.

The previous prime is 38678861883799. The next prime is 38678861883881. The reversal of 38678861883872 is 27838816887683.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2007821654 + ... + 2007840917.

It is an arithmetic number, because the mean of its divisors is an integer number (1855236108264).

Almost surely, 238678861883872 is an apocalyptic number.

38678861883872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

38678861883872 is an abundant number, since it is smaller than the sum of its proper divisors (50372471312800).

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

38678861883872 is a wasteful number, since it uses less digits than its factorization.

38678861883872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4015662631 (or 4015662623 counting only the distinct ones).

The product of its digits is 8323596288, while the sum is 83.

The spelling of 38678861883872 in words is "thirty-eight trillion, six hundred seventy-eight billion, eight hundred sixty-one million, eight hundred eighty-three thousand, eight hundred seventy-two".

Divisors: 1 2 4 7 8 14 16 28 32 43 56 86 112 172 224 301 344 602 688 1204 1376 2408 4816 9632 4015662571 8031325142 16062650284 28109637997 32125300568 56219275994 64250601136 112438551988 128501202272 172673490553 224877103976 345346981106 449754207952 690693962212 899508415904 1208714433871 1381387924424 2417428867742 2762775848848 4834857735484 5525551697696 9669715470968 19339430941936 38678861883872