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18740728482860 = 2255318019816731
BaseRepresentation
bin1000100001011011010100…
…11101101100110000101100
32110100121002120221100112202
410100231222131230300230
54424022002442422420
6103505212151121032
73642654502521566
oct420555235546054
973317076840482
1018740728482860
115a7599772793a
1221280b4073178
13a5c3211717c7
1448b0add10336
15227751894575
hex110b6a76cc2c

18740728482860 has 48 divisors (see below), whose sum is σ = 40120355413152. Its totient is φ = 7350767424000.

The previous prime is 18740728482829. The next prime is 18740728482899. The reversal of 18740728482860 is 6828482704781.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2999306 + ... + 6817425.

It is an arithmetic number, because the mean of its divisors is an integer number (835840737774).

Almost surely, 218740728482860 is an apocalyptic number.

18740728482860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18740728482860 is an abundant number, since it is smaller than the sum of its proper divisors (21379626930292).

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

18740728482860 is a wasteful number, since it uses less digits than its factorization.

18740728482860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9818594 (or 9818592 counting only the distinct ones).

The product of its (nonzero) digits is 77070336, while the sum is 65.

The spelling of 18740728482860 in words is "eighteen trillion, seven hundred forty billion, seven hundred twenty-eight million, four hundred eighty-two thousand, eight hundred sixty".

Divisors: 1 2 4 5 10 20 53 106 212 265 530 1060 1801 3602 7204 9005 18010 36020 95453 190906 381812 477265 954530 1909060 9816731 19633462 39266924 49083655 98167310 196334620 520286743 1040573486 2081146972 2601433715 5202867430 10405734860 17679932531 35359865062 70719730124 88399662655 176799325310 353598650620 937036424143 1874072848286 3748145696572 4685182120715 9370364241430 18740728482860