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18942864276 = 2237150172
BaseRepresentation
bin10001101001000101…
…010010101110010100
31210220011100012122210
4101221011102232110
5302243333124101
612411403153420
71240264455360
oct215105225624
953804305583
1018942864276
118040831336
123807b15870
131a2b68443b
14cb9b442a0
1575d0507d6
hex469152b94

18942864276 has 36 divisors (see below), whose sum is σ = 50517668768. Its totient is φ = 5411886528.

The previous prime is 18942864257. The next prime is 18942864301. The reversal of 18942864276 is 67246824981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1253920 + ... + 1268936.

Almost surely, 218942864276 is an apocalyptic number.

It is an amenable number.

18942864276 is an abundant number, since it is smaller than the sum of its proper divisors (31574804492).

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

18942864276 is an frugal number, since it uses more digits than its factorization.

18942864276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30048 (or 15029 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 57.

The spelling of 18942864276 in words is "eighteen billion, nine hundred forty-two million, eight hundred sixty-four thousand, two hundred seventy-six".

Divisors: 1 2 3 4 6 7 12 14 21 28 42 84 15017 30034 45051 60068 90102 105119 180204 210238 315357 420476 630714 1261428 225510289 451020578 676530867 902041156 1353061734 1578572023 2706123468 3157144046 4735716069 6314288092 9471432138 18942864276