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18874068 = 2231982781
BaseRepresentation
bin100011111111…
…1111011010100
31022111220100120
41013333323110
514312432233
61512311540
7316266303
oct107777324
938456316
1018874068
11a721404
1263a25b0
133baaab5
14271443a
1519cc4b3
hex11ffed4

18874068 has 24 divisors (see below), whose sum is σ = 46357920. Its totient is φ = 5960160.

The previous prime is 18874067. The next prime is 18874073. The reversal of 18874068 is 86047881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18874061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41163 + ... + 41618.

It is an arithmetic number, because the mean of its divisors is an integer number (1931580).

Almost surely, 218874068 is an apocalyptic number.

It is an amenable number.

18874068 is an abundant number, since it is smaller than the sum of its proper divisors (27483852).

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

18874068 is a wasteful number, since it uses less digits than its factorization.

18874068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82807 (or 82805 counting only the distinct ones).

The product of its (nonzero) digits is 86016, while the sum is 42.

The square root of 18874068 is about 4344.4295367747. The cubic root of 18874068 is about 266.2493186960.

The spelling of 18874068 in words is "eighteen million, eight hundred seventy-four thousand, sixty-eight".

Divisors: 1 2 3 4 6 12 19 38 57 76 114 228 82781 165562 248343 331124 496686 993372 1572839 3145678 4718517 6291356 9437034 18874068