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102012000030 = 23255261215447
BaseRepresentation
bin101111100000001100…
…0111001011100011110
3100202022101120112102100
41133000120321130132
53132410033000110
6114510315105530
710240644456543
oct1370030713436
9322271515370
10102012000030
113a299129546
121792b7422a6
1398095c8ac5
144d1a360bca
1529c0bbcbc0
hex17c063971e

102012000030 has 48 divisors (see below), whose sum is σ = 265282845984. Its totient is φ = 27197903040.

The previous prime is 102012000019. The next prime is 102012000047. The reversal of 102012000030 is 30000210201.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 102011999976 and 102012000021.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 365767 + ... + 581213.

It is an arithmetic number, because the mean of its divisors is an integer number (5526725958).

Almost surely, 2102012000030 is an apocalyptic number.

102012000030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

102012000030 is an abundant number, since it is smaller than the sum of its proper divisors (163270845954).

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

102012000030 is a wasteful number, since it uses less digits than its factorization.

102012000030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 220721 (or 220718 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

Adding to 102012000030 its reverse (30000210201), we get a palindrome (132012210231).

The spelling of 102012000030 in words is "one hundred two billion, twelve million, thirty", and thus it is an aban number.

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 5261 10522 15783 26305 31566 47349 52610 78915 94698 157830 215447 236745 430894 473490 646341 1077235 1292682 1939023 2154470 3231705 3878046 6463410 9695115 19390230 1133466667 2266933334 3400400001 5667333335 6800800002 10201200003 11334666670 17002000005 20402400006 34004000010 51006000015 102012000030