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102801380 = 225111727487
BaseRepresentation
bin1100010000010…
…01111111100100
321011102211222112
412020021333210
5202304121010
614111220152
72355540323
oct610117744
9234384875
10102801380
1153035220
122a517658
13183b4926
14d9200ba
159059a05
hex6209fe4

102801380 has 48 divisors (see below), whose sum is σ = 249371136. Its totient is φ = 35182080.

The previous prime is 102801379. The next prime is 102801437. The reversal of 102801380 is 83108201.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10004 + ... + 17483.

It is an arithmetic number, because the mean of its divisors is an integer number (5195232).

Almost surely, 2102801380 is an apocalyptic number.

102801380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

102801380 is an abundant number, since it is smaller than the sum of its proper divisors (146569756).

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

102801380 is a wasteful number, since it uses less digits than its factorization.

102801380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27524 (or 27522 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 23.

The square root of 102801380 is about 10139.1015381048. The cubic root of 102801380 is about 468.4533131756.

Adding to 102801380 its reverse (83108201), we get a palindrome (185909581).

The spelling of 102801380 in words is "one hundred two million, eight hundred one thousand, three hundred eighty".

Divisors: 1 2 4 5 10 11 17 20 22 34 44 55 68 85 110 170 187 220 340 374 748 935 1870 3740 27487 54974 109948 137435 274870 302357 467279 549740 604714 934558 1209428 1511785 1869116 2336395 3023570 4672790 5140069 6047140 9345580 10280138 20560276 25700345 51400690 102801380