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72050180 = 22514292521
BaseRepresentation
bin1000100101101…
…10011000000100
312000120112021012
410102312120010
5121421101210
611052141352
71533262556
oct422663004
9160515235
1072050180
1137741404
1220167858
1311c08a57
1497d74d6
1564d3305
hex44b6604

72050180 has 24 divisors (see below), whose sum is σ = 151471320. Its totient is φ = 28788480.

The previous prime is 72050179. The next prime is 72050183. The reversal of 72050180 is 8105027.

It can be written as a sum of positive squares in 4 ways, for example, as 7054336 + 64995844 = 2656^2 + 8062^2 .

It is not an unprimeable number, because it can be changed into a prime (72050183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27320 + ... + 29840.

It is an arithmetic number, because the mean of its divisors is an integer number (6311305).

Almost surely, 272050180 is an apocalyptic number.

It is an amenable number.

72050180 is an abundant number, since it is smaller than the sum of its proper divisors (79421140).

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

72050180 is a wasteful number, since it uses less digits than its factorization.

72050180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3959 (or 3957 counting only the distinct ones).

The product of its (nonzero) digits is 560, while the sum is 23.

The square root of 72050180 is about 8488.2377440786. The cubic root of 72050180 is about 416.1133890242.

The spelling of 72050180 in words is "seventy-two million, fifty thousand, one hundred eighty".

Divisors: 1 2 4 5 10 20 1429 2521 2858 5042 5716 7145 10084 12605 14290 25210 28580 50420 3602509 7205018 14410036 18012545 36025090 72050180