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490253 = 1393527
BaseRepresentation
bin1110111101100001101
3220220111112
41313230031
5111142003
614301405
74111211
oct1675415
9826445
10490253
11305375
121b7865
131421ba
14ca941
159a3d8
hex77b0d

490253 has 4 divisors (see below), whose sum is σ = 493920. Its totient is φ = 486588.

The previous prime is 490249. The next prime is 490267. The reversal of 490253 is 352094.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 352094 = 2176047.

It is a cyclic number.

It is not a de Polignac number, because 490253 - 22 = 490249 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (490223) 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, 1625 + ... + 1902.

It is an arithmetic number, because the mean of its divisors is an integer number (123480).

2490253 is an apocalyptic number.

It is an amenable number.

490253 is a deficient number, since it is larger than the sum of its proper divisors (3667).

490253 is a wasteful number, since it uses less digits than its factorization.

490253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3666.

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 490253 is about 700.1806909648. The cubic root of 490253 is about 78.8509179019.

The spelling of 490253 in words is "four hundred ninety thousand, two hundred fifty-three".

Divisors: 1 139 3527 490253