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18119960 = 2351726647
BaseRepresentation
bin100010100011…
…1110100011000
31021002120220122
41011013310120
514114314320
61444212412
7310005605
oct105076430
937076818
1018119960
11a256881
12609a108
1339a5791
1425996ac
1518cdd25
hex1147d18

18119960 has 32 divisors (see below), whose sum is σ = 43169760. Its totient is φ = 6821376.

The previous prime is 18119921. The next prime is 18119963. The reversal of 18119960 is 6991181.

It is a self number, because there is not a number n which added to its sum of digits gives 18119960.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18119963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12644 + ... + 14003.

It is an arithmetic number, because the mean of its divisors is an integer number (1349055).

Almost surely, 218119960 is an apocalyptic number.

18119960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18119960 is an abundant number, since it is smaller than the sum of its proper divisors (25049800).

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

18119960 is a wasteful number, since it uses less digits than its factorization.

18119960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26675 (or 26671 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 35.

The square root of 18119960 is about 4256.7546323461. The cubic root of 18119960 is about 262.6550437051.

The spelling of 18119960 in words is "eighteen million, one hundred nineteen thousand, nine hundred sixty".

Divisors: 1 2 4 5 8 10 17 20 34 40 68 85 136 170 340 680 26647 53294 106588 133235 213176 266470 452999 532940 905998 1065880 1811996 2264995 3623992 4529990 9059980 18119960