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490987694 = 21440117047
BaseRepresentation
bin11101010000111…
…110000010101110
31021012212202111102
4131100332002232
52001143101234
6120415323102
715111220001
oct3520760256
91235782442
10490987694
1123217135a
12118520492
137a94ac82
14492cb538
152d187c7e
hex1d43e0ae

490987694 has 8 divisors (see below), whose sum is σ = 736575888. Its totient is φ = 245462400.

The previous prime is 490987691. The next prime is 490987699. The reversal of 490987694 is 496789094.

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

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490987691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20279 + ... + 37325.

It is an arithmetic number, because the mean of its divisors is an integer number (92071986).

Almost surely, 2490987694 is an apocalyptic number.

490987694 is a deficient number, since it is larger than the sum of its proper divisors (245588194).

490987694 is a wasteful number, since it uses less digits than its factorization.

490987694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31450.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The square root of 490987694 is about 22158.2421234176. The cubic root of 490987694 is about 788.9028694988.

The spelling of 490987694 in words is "four hundred ninety million, nine hundred eighty-seven thousand, six hundred ninety-four".

Divisors: 1 2 14401 17047 28802 34094 245493847 490987694