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18876142900 = 2252739712663
BaseRepresentation
bin10001100101000110…
…110001010100110100
31210201111210102010201
4101211012301110310
5302124243033100
612401021130244
71235524365406
oct214506612464
953644712121
1018876142900
1180070aa5aa
1237a96b9984
131a1a8c3034
14cb0d36b76
1575727136a
hex4651b1534

18876142900 has 72 divisors (see below), whose sum is σ = 41580713664. Its totient is φ = 7436563200.

The previous prime is 18876142853. The next prime is 18876142903. The reversal of 18876142900 is 924167881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18876142903) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7086969 + ... + 7089631.

It is an arithmetic number, because the mean of its divisors is an integer number (577509912).

Almost surely, 218876142900 is an apocalyptic number.

18876142900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18876142900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20790356832).

18876142900 is an abundant number, since it is smaller than the sum of its proper divisors (22704570764).

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

18876142900 is a wasteful number, since it uses less digits than its factorization.

18876142900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3721 (or 3714 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 46.

The spelling of 18876142900 in words is "eighteen billion, eight hundred seventy-six million, one hundred forty-two thousand, nine hundred".

Divisors: 1 2 4 5 10 20 25 50 73 100 146 292 365 730 971 1460 1825 1942 2663 3650 3884 4855 5326 7300 9710 10652 13315 19420 24275 26630 48550 53260 66575 70883 97100 133150 141766 194399 266300 283532 354415 388798 708830 777596 971995 1417660 1772075 1943990 2585773 3544150 3887980 4859975 5171546 7088300 9719950 10343092 12928865 19439900 25857730 51715460 64644325 129288650 188761429 258577300 377522858 755045716 943807145 1887614290 3775228580 4719035725 9438071450 18876142900