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102247180 = 22571742961
BaseRepresentation
bin1100001100000…
…10101100001100
321010101200202121
412012002230030
5202133402210
614051302324
72351041510
oct606025414
9233350677
10102247180
1152796902
122a2aa9a4
131824c5b9
14d818140
158e9a6da
hex6182b0c

102247180 has 48 divisors (see below), whose sum is σ = 259834176. Its totient is φ = 32993280.

The previous prime is 102247147. The next prime is 102247181. The reversal of 102247180 is 81742201.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (102247181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19101 + ... + 23860.

It is an arithmetic number, because the mean of its divisors is an integer number (5413212).

Almost surely, 2102247180 is an apocalyptic number.

102247180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102247180 is an abundant number, since it is smaller than the sum of its proper divisors (157586996).

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

102247180 is a wasteful number, since it uses less digits than its factorization.

102247180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42994 (or 42992 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 102247180 is about 10111.7347670912. The cubic root of 102247180 is about 467.6099887053.

Adding to 102247180 its reverse (81742201), we get a palindrome (183989381).

The spelling of 102247180 in words is "one hundred two million, two hundred forty-seven thousand, one hundred eighty".

Divisors: 1 2 4 5 7 10 14 17 20 28 34 35 68 70 85 119 140 170 238 340 476 595 1190 2380 42961 85922 171844 214805 300727 429610 601454 730337 859220 1202908 1460674 1503635 2921348 3007270 3651685 5112359 6014540 7303370 10224718 14606740 20449436 25561795 51123590 102247180