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490386657 = 32321533301
BaseRepresentation
bin11101001110101…
…011010011100001
31021011202020000210
4131032223103201
52001014333112
6120354404333
715103134465
oct3516532341
91234666023
10490386657
112318a0832
121182906a9
137a79a527
14491b24a5
152d0b9b3c
hex1d3ab4e1

490386657 has 16 divisors (see below), whose sum is σ = 682800768. Its totient is φ = 312470400.

The previous prime is 490386647. The next prime is 490386667. The reversal of 490386657 is 756683094.

It is an interprime number because it is at equal distance from previous prime (490386647) and next prime (490386667).

It is not a de Polignac number, because 490386657 - 28 = 490386401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (490386647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146907 + ... + 150207.

It is an arithmetic number, because the mean of its divisors is an integer number (42675048).

Almost surely, 2490386657 is an apocalyptic number.

It is an amenable number.

490386657 is a deficient number, since it is larger than the sum of its proper divisors (192414111).

490386657 is a wasteful number, since it uses less digits than its factorization.

490386657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5480.

The product of its (nonzero) digits is 1088640, while the sum is 48.

The square root of 490386657 is about 22144.6755903084. The cubic root of 490386657 is about 788.5808292314.

The spelling of 490386657 in words is "four hundred ninety million, three hundred eighty-six thousand, six hundred fifty-seven".

Divisors: 1 3 23 69 2153 3301 6459 9903 49519 75923 148557 227769 7107053 21321159 163462219 490386657