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72084800 = 265245053
BaseRepresentation
bin1000100101111…
…10110101000000
312000122021202102
410102332311000
5121423203200
611053005532
71533465524
oct422766500
9160567672
1072084800
1137765417
12201838a8
1311c1b738
149805d84
1564dd6d5
hex44bed40

72084800 has 42 divisors (see below), whose sum is σ = 177377598. Its totient is φ = 28833280.

The previous prime is 72084797. The next prime is 72084851. The reversal of 72084800 is 848027.

It can be written as a sum of positive squares in 3 ways, for example, as 8340544 + 63744256 = 2888^2 + 7984^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20927 + ... + 24126.

Almost surely, 272084800 is an apocalyptic number.

It is an amenable number.

72084800 is an abundant number, since it is smaller than the sum of its proper divisors (105292798).

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

72084800 is a wasteful number, since it uses less digits than its factorization.

72084800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45075 (or 45060 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 72084800 is about 8490.2767917189. The cubic root of 72084800 is about 416.1800256323.

The spelling of 72084800 in words is "seventy-two million, eighty-four thousand, eight hundred".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 160 200 320 400 800 1600 45053 90106 180212 225265 360424 450530 720848 901060 1126325 1441696 1802120 2252650 2883392 3604240 4505300 7208480 9010600 14416960 18021200 36042400 72084800