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987396492 = 2234721932
BaseRepresentation
bin111010110110100…
…111100110001100
32112210221221100110
4322312213212030
54010233141432
6241551200020
733316505655
oct7266474614
92483857313
10987396492
114673a5665
12236816010
131297465a4
14951ca52c
155ba41dcc
hex3ada798c

987396492 has 54 divisors (see below), whose sum is σ = 2366247828. Its totient is φ = 320460288.

The previous prime is 987396451. The next prime is 987396497. The reversal of 987396492 is 294693789.

It is a super-3 number, since 3×9873964923 (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (987396497) 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 17 ways as a sum of consecutive naturals, for example, 5115948 + ... + 5116140.

Almost surely, 2987396492 is an apocalyptic number.

It is an amenable number.

987396492 is an abundant number, since it is smaller than the sum of its proper divisors (1378851336).

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

987396492 is a wasteful number, since it uses less digits than its factorization.

987396492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487 (or 245 counting only the distinct ones).

The product of its digits is 5878656, while the sum is 57.

The square root of 987396492 is about 31422.8657509146. The cubic root of 987396492 is about 995.7810562117.

The spelling of 987396492 in words is "nine hundred eighty-seven million, three hundred ninety-six thousand, four hundred ninety-two".

Divisors: 1 2 3 4 6 12 47 94 141 188 193 282 386 564 579 772 1158 2209 2316 4418 6627 8836 9071 13254 18142 26508 27213 36284 37249 54426 74498 108852 111747 148996 223494 426337 446988 852674 1279011 1705348 1750703 2558022 3501406 5116044 5252109 7002812 10504218 21008436 82283041 164566082 246849123 329132164 493698246 987396492