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18813060 = 223557279
BaseRepresentation
bin100011111000…
…1000010000100
31022101210200000
41013301002010
514304004220
61511121300
7315623400
oct107610204
938353600
1018813060
11a68a592
126373230
133b890b6
1426da100
1519b9390
hex11f1084

18813060 has 216 divisors, whose sum is σ = 69713280. Its totient is φ = 4245696.

The previous prime is 18813043. The next prime is 18813077. The reversal of 18813060 is 6031881.

It is an interprime number because it is at equal distance from previous prime (18813043) and next prime (18813077).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 238101 + ... + 238179.

Almost surely, 218813060 is an apocalyptic number.

18813060 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 18813060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34856640).

18813060 is an abundant number, since it is smaller than the sum of its proper divisors (50900220).

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

18813060 is a wasteful number, since it uses less digits than its factorization.

18813060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 18813060 is about 4337.4024484707. The cubic root of 18813060 is about 265.9621368083.

The spelling of 18813060 in words is "eighteen million, eight hundred thirteen thousand, sixty".