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252813 = 31147163
BaseRepresentation
bin111101101110001101
3110211210110
4331232031
531042223
65230233
72102031
oct755615
9424713
10252813
11162a40
12102379
138b0c2
14681c1
154ed93
hex3db8d

252813 has 16 divisors (see below), whose sum is σ = 377856. Its totient is φ = 149040.

The previous prime is 252779. The next prime is 252817. The reversal of 252813 is 318252.

It is not a de Polignac number, because 252813 - 210 = 251789 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 252813.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 252813.

It is not an unprimeable number, because it can be changed into a prime (252817) 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, 1470 + ... + 1632.

It is an arithmetic number, because the mean of its divisors is an integer number (23616).

2252813 is an apocalyptic number.

It is an amenable number.

252813 is a deficient number, since it is larger than the sum of its proper divisors (125043).

252813 is a wasteful number, since it uses less digits than its factorization.

252813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224.

The product of its digits is 480, while the sum is 21.

The square root of 252813 is about 502.8051312387. The cubic root of 252813 is about 63.2314489905.

The spelling of 252813 in words is "two hundred fifty-two thousand, eight hundred thirteen".

Divisors: 1 3 11 33 47 141 163 489 517 1551 1793 5379 7661 22983 84271 252813