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230280136 = 2343669419
BaseRepresentation
bin11011011100111…
…00101111001000
3121001022102221221
431232130233020
5432422431021
634503411424
75464230442
oct1556345710
9531272857
10230280136
11108a94969
1265153b74
1338929948
1422825492
151533b241
hexdb9cbc8

230280136 has 16 divisors (see below), whose sum is σ = 441817200. Its totient is φ = 112462224.

The previous prime is 230280131. The next prime is 230280137. The reversal of 230280136 is 631082032.

It is a self number, because there is not a number n which added to its sum of digits gives 230280136.

It is not an unprimeable number, because it can be changed into a prime (230280131) 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, 334366 + ... + 335053.

It is an arithmetic number, because the mean of its divisors is an integer number (27613575).

Almost surely, 2230280136 is an apocalyptic number.

It is an amenable number.

230280136 is a deficient number, since it is larger than the sum of its proper divisors (211537064).

230280136 is a wasteful number, since it uses less digits than its factorization.

230280136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669468 (or 669464 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 230280136 is about 15174.9838879651. The cubic root of 230280136 is about 612.9412162308.

The spelling of 230280136 in words is "two hundred thirty million, two hundred eighty thousand, one hundred thirty-six".

Divisors: 1 2 4 8 43 86 172 344 669419 1338838 2677676 5355352 28785017 57570034 115140068 230280136