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435020420 = 22521751021
BaseRepresentation
bin11001111011011…
…110001010000100
31010022120022211102
4121323132022010
51342331123140
6111055555232
713531420052
oct3173361204
91108508742
10435020420
1120361530a
1210182bb18
136c183743
1441abd1d2
15282cee15
hex19ede284

435020420 has 12 divisors (see below), whose sum is σ = 913542924. Its totient is φ = 174008160.

The previous prime is 435020407. The next prime is 435020423. The reversal of 435020420 is 24020534.

It can be written as a sum of positive squares in 2 ways, for example, as 194212096 + 240808324 = 13936^2 + 15518^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 21751021 = 435020420 / (4 + 3 + 5 + 0 + 2 + 0 + 4 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 435020392 and 435020401.

It is not an unprimeable number, because it can be changed into a prime (435020423) 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, 10875491 + ... + 10875530.

It is an arithmetic number, because the mean of its divisors is an integer number (76128577).

Almost surely, 2435020420 is an apocalyptic number.

It is an amenable number.

435020420 is an abundant number, since it is smaller than the sum of its proper divisors (478522504).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

435020420 is a wasteful number, since it uses less digits than its factorization.

435020420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21751030 (or 21751028 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 435020420 is about 20857.1431409002. The cubic root of 435020420 is about 757.7103410763.

Adding to 435020420 its reverse (24020534), we get a palindrome (459040954).

The spelling of 435020420 in words is "four hundred thirty-five million, twenty thousand, four hundred twenty".

Divisors: 1 2 4 5 10 20 21751021 43502042 87004084 108755105 217510210 435020420