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18870614017024 = 21072112412432
BaseRepresentation
bin1000100101001101010000…
…01111101100010000000000
32110211000100112111010120011
410102212220033230100000
54433134004142021044
6104045012420554304
73655233256404400
oct422465017542000
973730315433504
1018870614017024
116015a89725100
122149302552994
13a6b650409373
144934b2100800
1522ad04647134
hex1129a83ec400

18870614017024 has 891 divisors, whose sum is σ = 50615115325173. Its totient is φ = 7006054809600.

The previous prime is 18870614016911. The next prime is 18870614017043. The reversal of 18870614017024 is 42071041607881.

It is a happy number.

The square root of 18870614017024 is 4344032.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 909291930624 + 17961322086400 = 953568^2 + 4238080^2 .

It is a super-2 number, since 2×188706140170242 (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 438851488747 + ... + 438851488789.

Almost surely, 218870614017024 is an apocalyptic number.

18870614017024 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18870614017024 is the 4344032-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18870614017024

18870614017024 is an abundant number, since it is smaller than the sum of its proper divisors (31744501308149).

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

18870614017024 is an equidigital number, since it uses as much as digits as its factorization.

18870614017024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224 (or 104 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 49.

Multiplying 18870614017024 by its sum of digits (49), we get a square (924660086834176 = 304082242).

18870614017024 divided by its sum of digits (49) gives a square (385114571776 = 6205762).

The spelling of 18870614017024 in words is "eighteen trillion, eight hundred seventy billion, six hundred fourteen million, seventeen thousand, twenty-four".