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405230423 = 13191640609
BaseRepresentation
bin11000001001110…
…101001101010111
31001020111211122012
4120021311031113
51312214333143
6104113254435
713020254543
oct3011651527
91036454565
10405230423
11198818684
12b386441b
1365c53220
143bb66a23
1525898418
hex18275357

405230423 has 8 divisors (see below), whose sum is σ = 459370800. Its totient is φ = 354371328.

The previous prime is 405230407. The next prime is 405230437. The reversal of 405230423 is 324032504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 405230423 - 24 = 405230407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405230723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 820058 + ... + 820551.

It is an arithmetic number, because the mean of its divisors is an integer number (57421350).

Almost surely, 2405230423 is an apocalyptic number.

405230423 is a deficient number, since it is larger than the sum of its proper divisors (54140377).

405230423 is a wasteful number, since it uses less digits than its factorization.

405230423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1640641.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 405230423 is about 20130.3358889016. The cubic root of 405230423 is about 740.0039097675.

Adding to 405230423 its reverse (324032504), we get a palindrome (729262927).

The spelling of 405230423 in words is "four hundred five million, two hundred thirty thousand, four hundred twenty-three".

Divisors: 1 13 19 247 1640609 21327917 31171571 405230423