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490245873 = 31331405497
BaseRepresentation
bin11101001110001…
…000111011110001
31021011111001220120
4131032020323301
52001000331443
6120351400453
715102010155
oct3516107361
91234431816
10490245873
11231804a87
12118223129
137a74b420
1449177065
152d08d083
hex1d388ef1

490245873 has 16 divisors (see below), whose sum is σ = 726652416. Its totient is φ = 291957120.

The previous prime is 490245871. The next prime is 490245887. The reversal of 490245873 is 378542094.

It is not a de Polignac number, because 490245873 - 21 = 490245871 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (490245871) 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, 201540 + ... + 203957.

It is an arithmetic number, because the mean of its divisors is an integer number (45415776).

Almost surely, 2490245873 is an apocalyptic number.

It is an amenable number.

490245873 is a deficient number, since it is larger than the sum of its proper divisors (236406543).

490245873 is a wasteful number, since it uses less digits than its factorization.

490245873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405544.

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 490245873 is about 22141.4966296319. The cubic root of 490245873 is about 788.5053580444.

The spelling of 490245873 in words is "four hundred ninety million, two hundred forty-five thousand, eight hundred seventy-three".

Divisors: 1 3 13 31 39 93 403 1209 405497 1216491 5271461 12570407 15814383 37711221 163415291 490245873