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490912069 = 23104920347
BaseRepresentation
bin11101010000101…
…011100101000101
31021012201220202111
4131100223211011
52001133141234
6120413541021
715110453344
oct3520534505
91235656674
10490912069
1123211a55a
121184a4771
137a92271b
14492abb5b
152d170664
hex1d42b945

490912069 has 8 divisors (see below), whose sum is σ = 512769600. Its totient is φ = 469097376.

The previous prime is 490912067. The next prime is 490912073. The reversal of 490912069 is 960219094.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 490912069 - 21 = 490912067 is a prime.

It is a super-2 number, since 2×4909120692 = 481989318979721522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490912061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13954 + ... + 34300.

It is an arithmetic number, because the mean of its divisors is an integer number (64096200).

Almost surely, 2490912069 is an apocalyptic number.

It is an amenable number.

490912069 is a deficient number, since it is larger than the sum of its proper divisors (21857531).

490912069 is a wasteful number, since it uses less digits than its factorization.

490912069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21419.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 490912069 is about 22156.5355820805. The cubic root of 490912069 is about 788.8623634986.

The spelling of 490912069 in words is "four hundred ninety million, nine hundred twelve thousand, sixty-nine".

Divisors: 1 23 1049 20347 24127 467981 21344003 490912069