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18996068 = 22713232269
BaseRepresentation
bin100100001110…
…1101101100100
31022202002201002
41020131231210
514330333233
61515052432
7320315060
oct110355544
938662632
1018996068
11a7a5033
126441118
133c214a0
142746aa0
151a036e8
hex121db64

18996068 has 48 divisors (see below), whose sum is σ = 42712320. Its totient is φ = 7185024.

The previous prime is 18996049. The next prime is 18996077. The reversal of 18996068 is 86069981.

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, 7238 + ... + 9506.

It is an arithmetic number, because the mean of its divisors is an integer number (889840).

Almost surely, 218996068 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18996068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21356160).

18996068 is an abundant number, since it is smaller than the sum of its proper divisors (23716252).

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

18996068 is a wasteful number, since it uses less digits than its factorization.

18996068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2316 (or 2314 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 47.

The square root of 18996068 is about 4358.4478888705. The cubic root of 18996068 is about 266.8217563123.

The spelling of 18996068 in words is "eighteen million, nine hundred ninety-six thousand, sixty-eight".

Divisors: 1 2 4 7 13 14 23 26 28 46 52 91 92 161 182 299 322 364 598 644 1196 2093 2269 4186 4538 8372 9076 15883 29497 31766 52187 58994 63532 104374 117988 206479 208748 365309 412958 678431 730618 825916 1356862 1461236 2713724 4749017 9498034 18996068