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38841930 = 234579607
BaseRepresentation
bin1001010000101…
…0111001001010
32201002101010000
42110022321022
534420420210
63504303430
7651102531
oct224127112
981071100
1038841930
111aa1a576
1211011b76
13807c6ba
145231318
153623ac0
hex250ae4a

38841930 has 80 divisors (see below), whose sum is σ = 105937920. Its totient is φ = 10209888.

The previous prime is 38841919. The next prime is 38841937. The reversal of 38841930 is 3914883.

It is a super-2 number, since 2×388419302 = 3017391052249800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (38841937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 63687 + ... + 64293.

It is an arithmetic number, because the mean of its divisors is an integer number (1324224).

Almost surely, 238841930 is an apocalyptic number.

38841930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 38841930, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52968960).

38841930 is an abundant number, since it is smaller than the sum of its proper divisors (67095990).

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

38841930 is a wasteful number, since it uses less digits than its factorization.

38841930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705 (or 696 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 38841930 is about 6232.3294200483. The cubic root of 38841930 is about 338.6623625547.

The spelling of 38841930 in words is "thirty-eight million, eight hundred forty-one thousand, nine hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 79 81 90 135 158 162 237 270 395 405 474 607 711 790 810 1185 1214 1422 1821 2133 2370 3035 3555 3642 4266 5463 6070 6399 7110 9105 10665 10926 12798 16389 18210 21330 27315 31995 32778 47953 49167 54630 63990 81945 95906 98334 143859 163890 239765 245835 287718 431577 479530 491670 719295 863154 1294731 1438590 2157885 2589462 3884193 4315770 6473655 7768386 12947310 19420965 38841930