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138892800 = 293523617
BaseRepresentation
bin10000100011101…
…01011000000000
3100200100111002210
420101311120000
5241024032200
621440542120
73304366164
oct1021653000
9320314083
10138892800
1171446242
123a621940
1322a103b7
1414636ca4
15c2d8650
hex8475600

138892800 has 120 divisors (see below), whose sum is σ = 458950536. Its totient is φ = 37027840.

The previous prime is 138892799. The next prime is 138892801. The reversal of 138892800 is 8298831.

It is an interprime number because it is at equal distance from previous prime (138892799) and next prime (138892801).

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138892801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36592 + ... + 40208.

Almost surely, 2138892800 is an apocalyptic number.

138892800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138892800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (229475268).

138892800 is an abundant number, since it is smaller than the sum of its proper divisors (320057736).

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

138892800 is an equidigital number, since it uses as much as digits as its factorization.

138892800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3648 (or 3627 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 138892800 is about 11785.2789529989. The cubic root of 138892800 is about 517.8769453726.

The spelling of 138892800 in words is "one hundred thirty-eight million, eight hundred ninety-two thousand, eight hundred".

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 25 30 32 40 48 50 60 64 75 80 96 100 120 128 150 160 192 200 240 256 300 320 384 400 480 512 600 640 768 800 960 1200 1280 1536 1600 1920 2400 2560 3200 3617 3840 4800 6400 7234 7680 9600 10851 12800 14468 18085 19200 21702 28936 36170 38400 43404 54255 57872 72340 86808 90425 108510 115744 144680 173616 180850 217020 231488 271275 289360 347232 361700 434040 462976 542550 578720 694464 723400 868080 925952 1085100 1157440 1388928 1446800 1736160 1851904 2170200 2314880 2777856 2893600 3472320 4340400 4629760 5555712 5787200 6944640 8680800 9259520 11574400 13889280 17361600 23148800 27778560 34723200 46297600 69446400 138892800