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207120 = 2435863
BaseRepresentation
bin110010100100010000
3101112010010
4302210100
523111440
64234520
71521564
oct624420
9345103
10207120
11131681
129ba40
1373374
14556a4
1541580
hex32910

207120 has 40 divisors (see below), whose sum is σ = 642816. Its totient is φ = 55168.

The previous prime is 207113. The next prime is 207121. The reversal of 207120 is 21702.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 207096 and 207105.

It is not an unprimeable number, because it can be changed into a prime (207121) 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, 192 + ... + 671.

2207120 is an apocalyptic number.

207120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

207120 is an abundant number, since it is smaller than the sum of its proper divisors (435696).

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

207120 is a wasteful number, since it uses less digits than its factorization.

207120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879 (or 873 counting only the distinct ones).

The product of its (nonzero) digits is 28, while the sum is 12.

The square root of 207120 is about 455.1043836308. The cubic root of 207120 is about 59.1662456714.

Adding to 207120 its reverse (21702), we get a palindrome (228822).

It can be divided in two parts, 20 and 7120, that added together give a triangular number (7140 = T119).

The spelling of 207120 in words is "two hundred seven thousand, one hundred twenty", and thus it is an iban number.

Divisors: 1 2 3 4 5 6 8 10 12 15 16 20 24 30 40 48 60 80 120 240 863 1726 2589 3452 4315 5178 6904 8630 10356 12945 13808 17260 20712 25890 34520 41424 51780 69040 103560 207120