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490878516 = 2231811931171
BaseRepresentation
bin11101010000100…
…011011000110100
31021012200012201210
4131100203120310
52001131103031
6120413121420
715110253462
oct3520433064
91235605653
10490878516
112320a7327
12118489270
137a91037b
144929d832
152d165746
hex1d423634

490878516 has 48 divisors (see below), whose sum is σ = 1158667328. Its totient is φ = 161740800.

The previous prime is 490878511. The next prime is 490878523. The reversal of 490878516 is 615878094.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490878511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 418611 + ... + 419781.

Almost surely, 2490878516 is an apocalyptic number.

It is an amenable number.

490878516 is an abundant number, since it is smaller than the sum of its proper divisors (667788812).

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

490878516 is a wasteful number, since it uses less digits than its factorization.

490878516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552 (or 1550 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 48.

The square root of 490878516 is about 22155.7783884927. The cubic root of 490878516 is about 788.8443906249.

The spelling of 490878516 in words is "four hundred ninety million, eight hundred seventy-eight thousand, five hundred sixteen".

Divisors: 1 2 3 4 6 12 181 193 362 386 543 579 724 772 1086 1158 1171 2172 2316 2342 3513 4684 7026 14052 34933 69866 104799 139732 209598 211951 226003 419196 423902 452006 635853 678009 847804 904012 1271706 1356018 2543412 2712036 40906543 81813086 122719629 163626172 245439258 490878516